641162020345 has 64 divisors (see below), whose sum is σ = 971394342912. Its totient is φ = 394655040000.

The previous prime is 641162020321. The next prime is 641162020357. The reversal of 641162020345 is 543020261146.

It is not a de Polignac number, because 641162020345 - 2⁵ = 641162020313 is a prime.

It is a super-2 number, since 2×641162020345² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 641162020345.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9675525 + ... + 9741565.

It is an arithmetic number, because the mean of its divisors is an integer number (15178036608).

Almost surely, 2^641162020345 is an apocalyptic number.

It is an amenable number.

641162020345 is a deficient number, since it is larger than the sum of its proper divisors (330232322567).

641162020345 is a wasteful number, since it uses less digits than its factorization.

641162020345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66382.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 641162020345 in words is "six hundred forty-one billion, one hundred sixty-two million, twenty thousand, three hundred forty-five".