641725521032 has 32 divisors (see below), whose sum is σ = 1214660733120. Its totient is φ = 317816882880.

The previous prime is 641725520993. The next prime is 641725521043. The reversal of 641725521032 is 230125527146.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6117182 + ... + 6221202.

It is an arithmetic number, because the mean of its divisors is an integer number (37958147910).

Almost surely, 2^641725521032 is an apocalyptic number.

It is an amenable number.

641725521032 is a deficient number, since it is larger than the sum of its proper divisors (572935212088).

641725521032 is a wasteful number, since it uses less digits than its factorization.

641725521032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111341 (or 111337 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 641725521032 in words is "six hundred forty-one billion, seven hundred twenty-five million, five hundred twenty-one thousand, thirty-two".