641269154344 has 32 divisors (see below), whose sum is σ = 1479851896320. Its totient is φ = 253688895936.

The previous prime is 641269154341. The next prime is 641269154347. The reversal of 641269154344 is 443451962146.

It is an interprime number because it is at equal distance from previous prime (641269154341) and next prime (641269154347).

It is a super-2 number, since 2×641269154344² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641269154341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440431384 + ... + 440432839.

It is an arithmetic number, because the mean of its divisors is an integer number (46245371760).

Almost surely, 2^641269154344 is an apocalyptic number.

It is an amenable number.

641269154344 is an abundant number, since it is smaller than the sum of its proper divisors (838582741976).

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

641269154344 is a wasteful number, since it uses less digits than its factorization.

641269154344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880864249 (or 880864245 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 49.

The spelling of 641269154344 in words is "six hundred forty-one billion, two hundred sixty-nine million, one hundred fifty-four thousand, three hundred forty-four".