12730977572 has 48 divisors (see below), whose sum is σ = 23917420800. Its totient is φ = 5915614848.

The previous prime is 12730977563. The next prime is 12730977587. The reversal of 12730977572 is 27577903721.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12730977572.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 489554 + ... + 514902.

It is an arithmetic number, because the mean of its divisors is an integer number (498279600).

Almost surely, 2^12730977572 is an apocalyptic number.

It is an amenable number.

12730977572 is a deficient number, since it is larger than the sum of its proper divisors (11186443228).

12730977572 is a wasteful number, since it uses less digits than its factorization.

12730977572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25532 (or 25530 counting only the distinct ones).

The product of its (nonzero) digits is 1296540, while the sum is 50.

The spelling of 12730977572 in words is "twelve billion, seven hundred thirty million, nine hundred seventy-seven thousand, five hundred seventy-two".