641553044307 has 64 divisors (see below), whose sum is σ = 1064763076608. Its totient is φ = 335222784000.

The previous prime is 641553044287. The next prime is 641553044317. The reversal of 641553044307 is 703440355146.

It is not a de Polignac number, because 641553044307 - 2¹² = 641553040211 is a prime.

It is a super-2 number, since 2×641553044307² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (641553044317) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3436582 + ... + 3618452.

It is an arithmetic number, because the mean of its divisors is an integer number (16636923072).

Almost surely, 2^641553044307 is an apocalyptic number.

641553044307 is a deficient number, since it is larger than the sum of its proper divisors (423210032301).

641553044307 is a wasteful number, since it uses less digits than its factorization.

641553044307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182180.

The product of its (nonzero) digits is 604800, while the sum is 42.

The spelling of 641553044307 in words is "six hundred forty-one billion, five hundred fifty-three million, forty-four thousand, three hundred seven".