264445613662531 has 12 divisors (see below), whose sum is σ = 307784122795920. Its totient is φ = 226547036699760.

The previous prime is 264445613662507. The next prime is 264445613662541. The reversal of 264445613662531 is 135266316544462.

It is a de Polignac number, because none of the positive numbers 2^k-264445613662531 is a prime.

It is a super-2 number, since 2×264445613662531² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264445613662541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1436004060 + ... + 1436188201.

It is an arithmetic number, because the mean of its divisors is an integer number (25648676899660).

Almost surely, 2^{264445613662531} is an apocalyptic number.

264445613662531 is a deficient number, since it is larger than the sum of its proper divisors (43338509133389).

264445613662531 is a wasteful number, since it uses less digits than its factorization.

264445613662531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2872194154 (or 2872194147 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 58.

The spelling of 264445613662531 in words is "two hundred sixty-four trillion, four hundred forty-five billion, six hundred thirteen million, six hundred sixty-two thousand, five hundred thirty-one".