125639160640 has 112 divisors (see below), whose sum is σ = 342192327552. Its totient is φ = 43041724416.

The previous prime is 125639160613. The next prime is 125639160659. The reversal of 125639160640 is 46061936521.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2852062 + ... + 2895778.

Almost surely, 2^125639160640 is an apocalyptic number.

125639160640 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 125639160640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171096163776).

125639160640 is an abundant number, since it is smaller than the sum of its proper divisors (216553166912).

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

125639160640 is a wasteful number, since it uses less digits than its factorization.

125639160640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45024 (or 45014 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 125639160640 in words is "one hundred twenty-five billion, six hundred thirty-nine million, one hundred sixty thousand, six hundred forty".