12540475372 has 6 divisors (see below), whose sum is σ = 21945831908. Its totient is φ = 6270237684.

The previous prime is 12540475369. The next prime is 12540475393. The reversal of 12540475372 is 27357404521.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1567559418 + ... + 1567559425.

Almost surely, 2^12540475372 is an apocalyptic number.

It is an amenable number.

12540475372 is a deficient number, since it is larger than the sum of its proper divisors (9405356536).

12540475372 is a wasteful number, since it uses less digits than its factorization.

12540475372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3135118847 (or 3135118845 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 40.

Adding to 12540475372 its reverse (27357404521), we get a palindrome (39897879893).

The spelling of 12540475372 in words is "twelve billion, five hundred forty million, four hundred seventy-five thousand, three hundred seventy-two".