139649334420 has 96 divisors (see below), whose sum is σ = 404237167488. Its totient is φ = 35998728192.

The previous prime is 139649334401. The next prime is 139649334431. The reversal of 139649334420 is 24433946931.

139649334420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 139649334420.

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 31 ways as a sum of consecutive naturals, for example, 28749 + ... + 529268.

It is an arithmetic number, because the mean of its divisors is an integer number (4210803828).

Almost surely, 2^139649334420 is an apocalyptic number.

139649334420 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 139649334420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202118583744).

139649334420 is an abundant number, since it is smaller than the sum of its proper divisors (264587833068).

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

139649334420 is a wasteful number, since it uses less digits than its factorization.

139649334420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558169 (or 558167 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 48.

The spelling of 139649334420 in words is "one hundred thirty-nine billion, six hundred forty-nine million, three hundred thirty-four thousand, four hundred twenty".