641061045631 has 16 divisors (see below), whose sum is σ = 654205118400. Its totient is φ = 627956679168.

The previous prime is 641061045601. The next prime is 641061045661. The reversal of 641061045631 is 136540160146.

It is an interprime number because it is at equal distance from previous prime (641061045601) and next prime (641061045661).

It is a cyclic number.

It is not a de Polignac number, because 641061045631 - 2²¹ = 641058948479 is a prime.

It is a super-2 number, since 2×641061045631² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641061045601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130320990 + ... + 130325908.

It is an arithmetic number, because the mean of its divisors is an integer number (40887819900).

Almost surely, 2^641061045631 is an apocalyptic number.

641061045631 is a deficient number, since it is larger than the sum of its proper divisors (13144072769).

641061045631 is a wasteful number, since it uses less digits than its factorization.

641061045631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8418.

The product of its (nonzero) digits is 51840, while the sum is 37.

The spelling of 641061045631 in words is "six hundred forty-one billion, sixty-one million, forty-five thousand, six hundred thirty-one".