139925121696 has 36 divisors (see below), whose sum is σ = 397912065642. Its totient is φ = 46641707136.

The previous prime is 139925121673. The next prime is 139925121709. The reversal of 139925121696 is 696121529931.

139925121696 is a `hidden beast` number, since 1 + 3 + 99 + 251 + 216 + 96 = 666.

It can be written as a sum of positive squares in only one way, i.e., 139305111696 + 620010000 = 373236^2 + 24900^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 242925271 + ... + 242925846.

Almost surely, 2^139925121696 is an apocalyptic number.

139925121696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

139925121696 is an abundant number, since it is smaller than the sum of its proper divisors (257986943946).

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

139925121696 is a wasteful number, since it uses less digits than its factorization.

139925121696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485851133 (or 485851122 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 54.

The spelling of 139925121696 in words is "one hundred thirty-nine billion, nine hundred twenty-five million, one hundred twenty-one thousand, six hundred ninety-six".