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139708788660 = 223457191374733
BaseRepresentation
bin1000001000011101001…
…0101110111110110100
3111100121112201210220000
42002013102232332310
54242110422214120
6144103100111300
713044054052440
oct2020722567664
9440545653800
10139708788660
1154282a72811
12230b0235530
13102364505ac
146a94aa5820
15397a39b990
hex20874aefb4

139708788660 has 480 divisors, whose sum is σ = 531204791040. Its totient is φ = 30025562112.

The previous prime is 139708788649. The next prime is 139708788677. The reversal of 139708788660 is 66887807931.

139708788660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 29515654 + ... + 29520386.

It is an arithmetic number, because the mean of its divisors is an integer number (1106676648).

Almost surely, 2139708788660 is an apocalyptic number.

139708788660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139708788660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265602395520).

139708788660 is an abundant number, since it is smaller than the sum of its proper divisors (391496002380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139708788660 is a wasteful number, since it uses less digits than its factorization.

139708788660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4917 (or 4906 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 63.

The spelling of 139708788660 in words is "one hundred thirty-nine billion, seven hundred eight million, seven hundred eighty-eight thousand, six hundred sixty".