81464096913 has 32 divisors (see below), whose sum is σ = 114419716992. Its totient is φ = 51487603200.

The previous prime is 81464096891. The next prime is 81464096953. The reversal of 81464096913 is 31969046418.

It is not a de Polignac number, because 81464096913 - 2¹⁶ = 81464031377 is a prime.

It is a super-2 number, since 2×81464096913² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (81464096953) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3725470 + ... + 3747272.

It is an arithmetic number, because the mean of its divisors is an integer number (3575616156).

Almost surely, 2^81464096913 is an apocalyptic number.

It is an amenable number.

81464096913 is a deficient number, since it is larger than the sum of its proper divisors (32955620079).

81464096913 is a wasteful number, since it uses less digits than its factorization.

81464096913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22705.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 81464096913 in words is "eighty-one billion, four hundred sixty-four million, ninety-six thousand, nine hundred thirteen".