1231459279664 has 20 divisors (see below), whose sum is σ = 2386840399104. Its totient is φ = 615500467008.

The previous prime is 1231459279663. The next prime is 1231459279709. The reversal of 1231459279664 is 4669729541321.

It is not an unprimeable number, because it can be changed into a prime (1231459279663) 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 3 ways as a sum of consecutive naturals, for example, 14278967 + ... + 14364950.

Almost surely, 2^{1231459279664} is an apocalyptic number.

It is an amenable number.

1231459279664 is a deficient number, since it is larger than the sum of its proper divisors (1155381119440).

1231459279664 is a wasteful number, since it uses less digits than its factorization.

1231459279664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28646612 (or 28646606 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 59.

The spelling of 1231459279664 in words is "one trillion, two hundred thirty-one billion, four hundred fifty-nine million, two hundred seventy-nine thousand, six hundred sixty-four".