11666247992 has 32 divisors (see below), whose sum is σ = 25351211520. Its totient is φ = 4929398880.

The previous prime is 11666247973. The next prime is 11666248019. The reversal of 11666247992 is 29974266611.

It is a super-2 number, since 2×11666247992² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 1463108 + ... + 1471059.

It is an arithmetic number, because the mean of its divisors is an integer number (792225360).

Almost surely, 2^11666247992 is an apocalyptic number.

It is an amenable number.

11666247992 is an abundant number, since it is smaller than the sum of its proper divisors (13684963528).

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

11666247992 is a wasteful number, since it uses less digits than its factorization.

11666247992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2934251 (or 2934247 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 53.

The spelling of 11666247992 in words is "eleven billion, six hundred sixty-six million, two hundred forty-seven thousand, nine hundred ninety-two".