11752007978 has 16 divisors (see below), whose sum is σ = 17806369320. Its totient is φ = 5816830656.

The previous prime is 11752007923. The next prime is 11752007989. The reversal of 11752007978 is 87970025711.

It can be written as a sum of positive squares in 4 ways, for example, as 10175362129 + 1576645849 = 100873^2 + 39707^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14900 + ... + 154032.

Almost surely, 2^11752007978 is an apocalyptic number.

11752007978 is a deficient number, since it is larger than the sum of its proper divisors (6054361342).

11752007978 is a wasteful number, since it uses less digits than its factorization.

11752007978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139561.

The product of its (nonzero) digits is 246960, while the sum is 47.

The spelling of 11752007978 in words is "eleven billion, seven hundred fifty-two million, seven thousand, nine hundred seventy-eight".