641597027274 has 80 divisors (see below), whose sum is σ = 1670879707200. Its totient is φ = 180206410176.

The previous prime is 641597027273. The next prime is 641597027293. The reversal of 641597027274 is 472720795146.

641597027274 is a `hidden beast` number, since 6 + 4 + 1 + 597 + 0 + 27 + 27 + 4 = 666.

It is a super-3 number, since 3×641597027274³ (a number of 36 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 641597027274.

It is not an unprimeable number, because it can be changed into a prime (641597027273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4727859 + ... + 4861670.

It is an arithmetic number, because the mean of its divisors is an integer number (20885996340).

Almost surely, 2^641597027274 is an apocalyptic number.

641597027274 is an abundant number, since it is smaller than the sum of its proper divisors (1029282679926).

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

641597027274 is a wasteful number, since it uses less digits than its factorization.

641597027274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9589609 (or 9589600 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 54.

The spelling of 641597027274 in words is "six hundred forty-one billion, five hundred ninety-seven million, twenty-seven thousand, two hundred seventy-four".