139694756500 has 96 divisors (see below), whose sum is σ = 329542196256. Its totient is φ = 51425740800.

The previous prime is 139694756491. The next prime is 139694756521. The reversal of 139694756500 is 5657496931.

It can be written as a sum of positive squares in 16 ways, for example, as 139602365956 + 92390544 = 373634^2 + 9612^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2158614 + ... + 2222386.

It is an arithmetic number, because the mean of its divisors is an integer number (3432731211).

Almost surely, 2^139694756500 is an apocalyptic number.

139694756500 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 139694756500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164771098128).

139694756500 is an abundant number, since it is smaller than the sum of its proper divisors (189847439756).

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

139694756500 is a wasteful number, since it uses less digits than its factorization.

139694756500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64142 (or 64130 counting only the distinct ones).

The product of its (nonzero) digits is 6123600, while the sum is 55.

The spelling of 139694756500 in words is "one hundred thirty-nine billion, six hundred ninety-four million, seven hundred fifty-six thousand, five hundred".