125811640328 has 64 divisors (see below), whose sum is σ = 258660864000. Its totient is φ = 56894620480.

The previous prime is 125811640319. The next prime is 125811640363. The reversal of 125811640328 is 823046118521.

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, 19970123 + ... + 19976421.

It is an arithmetic number, because the mean of its divisors is an integer number (4041576000).

Almost surely, 2^125811640328 is an apocalyptic number.

It is an amenable number.

125811640328 is an abundant number, since it is smaller than the sum of its proper divisors (132849223672).

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

125811640328 is a wasteful number, since it uses less digits than its factorization.

125811640328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7442 (or 7438 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 41.

Adding to 125811640328 its reverse (823046118521), we get a palindrome (948857758849).

The spelling of 125811640328 in words is "one hundred twenty-five billion, eight hundred eleven million, six hundred forty thousand, three hundred twenty-eight".