11666761172 has 24 divisors (see below), whose sum is σ = 22323222432. Its totient is φ = 5291093600.

The previous prime is 11666761151. The next prime is 11666761199. The reversal of 11666761172 is 27116766611.

It is a super-2 number, since 2×11666761172² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 279779 + ... + 318762.

It is an arithmetic number, because the mean of its divisors is an integer number (930134268).

Almost surely, 2^11666761172 is an apocalyptic number.

It is an amenable number.

11666761172 is a deficient number, since it is larger than the sum of its proper divisors (10656461260).

11666761172 is a wasteful number, since it uses less digits than its factorization.

11666761172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598999 (or 598997 counting only the distinct ones).

The product of its digits is 127008, while the sum is 44.

The spelling of 11666761172 in words is "eleven billion, six hundred sixty-six million, seven hundred sixty-one thousand, one hundred seventy-two".