641876081056 has 24 divisors (see below), whose sum is σ = 1444221182880. Its totient is φ = 275089748928.

The previous prime is 641876081039. The next prime is 641876081057. The reversal of 641876081056 is 650180678146.

641876081056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 641876080994 and 641876081012.

It is not an unprimeable number, because it can be changed into a prime (641876081057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1432758886 + ... + 1432759333.

It is an arithmetic number, because the mean of its divisors is an integer number (60175882620).

Almost surely, 2^641876081056 is an apocalyptic number.

It is an amenable number.

641876081056 is an abundant number, since it is smaller than the sum of its proper divisors (802345101824).

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

641876081056 is a wasteful number, since it uses less digits than its factorization.

641876081056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2865518236 (or 2865518228 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 641876081056 in words is "six hundred forty-one billion, eight hundred seventy-six million, eighty-one thousand, fifty-six".