11512713906 has 12 divisors (see below), whose sum is σ = 24944213502. Its totient is φ = 3837571296.

The previous prime is 11512713893. The next prime is 11512713943. The reversal of 11512713906 is 60931721511.

It is a happy number.

11512713906 is a `hidden beast` number, since 1 + 1 + 512 + 7 + 139 + 0 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9149879025 + 2362834881 = 95655^2 + 48609^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 319797591 + ... + 319797626.

Almost surely, 2^11512713906 is an apocalyptic number.

11512713906 is an abundant number, since it is smaller than the sum of its proper divisors (13431499596).

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

11512713906 is a wasteful number, since it uses less digits than its factorization.

11512713906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639595225 (or 639595222 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The spelling of 11512713906 in words is "eleven billion, five hundred twelve million, seven hundred thirteen thousand, nine hundred six".