11961547604756 has 24 divisors (see below), whose sum is σ = 21430021018560. Its totient is φ = 5838820892352.

The previous prime is 11961547604711. The next prime is 11961547604791. The reversal of 11961547604756 is 65740674516911.

It is a super-2 number, since 2×11961547604756² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16702721 + ... + 17404136.

It is an arithmetic number, because the mean of its divisors is an integer number (892917542440).

Almost surely, 2^{11961547604756} is an apocalyptic number.

It is an amenable number.

11961547604756 is a deficient number, since it is larger than the sum of its proper divisors (9468473413804).

11961547604756 is a wasteful number, since it uses less digits than its factorization.

11961547604756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34108943 (or 34108941 counting only the distinct ones).

The product of its (nonzero) digits is 38102400, while the sum is 62.

The spelling of 11961547604756 in words is "eleven trillion, nine hundred sixty-one billion, five hundred forty-seven million, six hundred four thousand, seven hundred fifty-six".