641374216631520 has 96 divisors (see below), whose sum is σ = 2020337772878880. Its totient is φ = 171032363335680.

The previous prime is 641374216631483. The next prime is 641374216631579. The reversal of 641374216631520 is 25136612473146.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×641374216631520² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109425996 + ... + 115138164.

It is an arithmetic number, because the mean of its divisors is an integer number (21045185134155).

Almost surely, 2^{641374216631520} is an apocalyptic number.

641374216631520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

641374216631520 is an abundant number, since it is smaller than the sum of its proper divisors (1378963556247360).

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

641374216631520 is a wasteful number, since it uses less digits than its factorization.

641374216631520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5946108 (or 5946100 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 51.

The spelling of 641374216631520 in words is "six hundred forty-one trillion, three hundred seventy-four billion, two hundred sixteen million, six hundred thirty-one thousand, five hundred twenty".