11666628787914 has 48 divisors (see below), whose sum is σ = 26844039455688. Its totient is φ = 3649257916416.

The previous prime is 11666628787909. The next prime is 11666628787949. The reversal of 11666628787914 is 41978782666611.

It can be written as a sum of positive squares in 4 ways, for example, as 10339974029889 + 1326654758025 = 3215583^2 + 1151805^2 .

It is a super-2 number, since 2×11666628787914² (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 23 ways as a sum of consecutive naturals, for example, 56463997 + ... + 56670240.

Almost surely, 2^{11666628787914} is an apocalyptic number.

11666628787914 is an abundant number, since it is smaller than the sum of its proper divisors (15177410667774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11666628787914 is a wasteful number, since it uses less digits than its factorization.

11666628787914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113134599 (or 113134596 counting only the distinct ones).

The product of its digits is 292626432, while the sum is 72.

The spelling of 11666628787914 in words is "eleven trillion, six hundred sixty-six billion, six hundred twenty-eight million, seven hundred eighty-seven thousand, nine hundred fourteen".