641432860277 has 12 divisors (see below), whose sum is σ = 703960454976. Its totient is φ = 579628763640.

The previous prime is 641432860273. The next prime is 641432860283. The reversal of 641432860277 is 772068234146.

It is not a de Polignac number, because 641432860277 - 2² = 641432860273 is a prime.

It is a super-2 number, since 2×641432860277² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641432860273) 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 11 ways as a sum of consecutive naturals, for example, 738653 + ... + 1352210.

It is an arithmetic number, because the mean of its divisors is an integer number (58663371248).

Almost surely, 2^641432860277 is an apocalyptic number.

It is an amenable number.

641432860277 is a deficient number, since it is larger than the sum of its proper divisors (62527594699).

641432860277 is a wasteful number, since it uses less digits than its factorization.

641432860277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2091208 (or 2091041 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 50.

The spelling of 641432860277 in words is "six hundred forty-one billion, four hundred thirty-two million, eight hundred sixty thousand, two hundred seventy-seven".