11117906057978 has 16 divisors (see below), whose sum is σ = 16905435042600. Its totient is φ = 5482762177536.

The previous prime is 11117906057977. The next prime is 11117906058013. The reversal of 11117906057978 is 87975060971111.

It can be written as a sum of positive squares in 4 ways, for example, as 8370855057049 + 2747051000929 = 2893243^2 + 1657423^2 .

It is a super-2 number, since 2×11117906057978² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11117906057978.

It is not an unprimeable number, because it can be changed into a prime (11117906057977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31777976 + ... + 32125932.

Almost surely, 2^{11117906057978} is an apocalyptic number.

11117906057978 is a deficient number, since it is larger than the sum of its proper divisors (5787528984622).

11117906057978 is a wasteful number, since it uses less digits than its factorization.

11117906057978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566881.

The product of its (nonzero) digits is 6667920, while the sum is 62.

The spelling of 11117906057978 in words is "eleven trillion, one hundred seventeen billion, nine hundred six million, fifty-seven thousand, nine hundred seventy-eight".