12576937554 has 20 divisors (see below), whose sum is σ = 28181656734. Its totient is φ = 4192312464.

The previous prime is 12576937537. The next prime is 12576937661. The reversal of 12576937554 is 45573967521.

It is a happy number.

12576937554 is a `hidden beast` number, since 1 + 2 + 57 + 6 + 9 + 37 + 554 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11284175529 + 1292762025 = 106227^2 + 35955^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 12576937554.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 38817547 + ... + 38817870.

Almost surely, 2^12576937554 is an apocalyptic number.

12576937554 is an abundant number, since it is smaller than the sum of its proper divisors (15604719180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12576937554 is an equidigital number, since it uses as much as digits as its factorization.

12576937554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77635431 (or 77635422 counting only the distinct ones).

The product of its digits is 7938000, while the sum is 54.

The spelling of 12576937554 in words is "twelve billion, five hundred seventy-six million, nine hundred thirty-seven thousand, five hundred fifty-four".