641176104640 has 56 divisors (see below), whose sum is σ = 1527200412192. Its totient is φ = 256403281920.

The previous prime is 641176104623. The next prime is 641176104659. The reversal of 641176104640 is 46401671146.

It is a happy number.

It is a super-2 number, since 2×641176104640² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 641176104593 and 641176104602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 970620 + ... + 1491460.

It is an arithmetic number, because the mean of its divisors is an integer number (27271435932).

Almost surely, 2^641176104640 is an apocalyptic number.

It is an amenable number.

641176104640 is an abundant number, since it is smaller than the sum of its proper divisors (886024307552).

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

641176104640 is a wasteful number, since it uses less digits than its factorization.

641176104640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524705 (or 524695 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

Adding to 641176104640 its reverse (46401671146), we get a palindrome (687577775786).

The spelling of 641176104640 in words is "six hundred forty-one billion, one hundred seventy-six million, one hundred four thousand, six hundred forty".