11658451667842 has 12 divisors (see below), whose sum is σ = 20342808522630. Its totient is φ = 4996479286176.

The previous prime is 11658451667831. The next prime is 11658451667857. The reversal of 11658451667842 is 24876615485611.

It can be written as a sum of positive squares in only one way, i.e., 10568747423521 + 1089704244321 = 3250961^2 + 1043889^2 .

It is a super-2 number, since 2×11658451667842² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59481896167 + ... + 59481896362.

Almost surely, 2^{11658451667842} is an apocalyptic number.

11658451667842 is a deficient number, since it is larger than the sum of its proper divisors (8684356854788).

11658451667842 is a wasteful number, since it uses less digits than its factorization.

11658451667842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118963792545 (or 118963792538 counting only the distinct ones).

The product of its digits is 77414400, while the sum is 64.

The spelling of 11658451667842 in words is "eleven trillion, six hundred fifty-eight billion, four hundred fifty-one million, six hundred sixty-seven thousand, eight hundred forty-two".