11871730756 has 24 divisors (see below), whose sum is σ = 21341796056. Its totient is φ = 5774146560.

The previous prime is 11871730747. The next prime is 11871730771. The reversal of 11871730756 is 65703717811.

It can be written as a sum of positive squares in 4 ways, for example, as 4155865156 + 7715865600 = 64466^2 + 87840^2 .

It is a super-2 number, since 2×11871730756² (a number of 21 digits) contains 22 as substring.

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, 1288486 + ... + 1297666.

Almost surely, 2^11871730756 is an apocalyptic number.

It is an amenable number.

11871730756 is a deficient number, since it is larger than the sum of its proper divisors (9470065300).

11871730756 is a wasteful number, since it uses less digits than its factorization.

11871730756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17959 (or 17957 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 46.

The spelling of 11871730756 in words is "eleven billion, eight hundred seventy-one million, seven hundred thirty thousand, seven hundred fifty-six".