641386433883 has 64 divisors (see below), whose sum is σ = 951427215872. Its totient is φ = 381873761280.

The previous prime is 641386433879. The next prime is 641386433921. The reversal of 641386433883 is 388334683146.

It is not a de Polignac number, because 641386433883 - 2² = 641386433879 is a prime.

It is a super-2 number, since 2×641386433883² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (641386433683) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 125439735 + ... + 125444847.

It is an arithmetic number, because the mean of its divisors is an integer number (14866050248).

Almost surely, 2^641386433883 is an apocalyptic number.

641386433883 is a deficient number, since it is larger than the sum of its proper divisors (310040781989).

641386433883 is a wasteful number, since it uses less digits than its factorization.

641386433883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6044.

The product of its digits is 23887872, while the sum is 57.

The spelling of 641386433883 in words is "six hundred forty-one billion, three hundred eighty-six million, four hundred thirty-three thousand, eight hundred eighty-three".