11666062631 has 4 divisors (see below), whose sum is σ = 12042387264. Its totient is φ = 11289738000.

The previous prime is 11666062607. The next prime is 11666062649. The reversal of 11666062631 is 13626066611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11666062631 - 2¹⁰ = 11666061607 is a prime.

It is a super-2 number, since 2×11666062631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11666062531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188162270 + ... + 188162331.

It is an arithmetic number, because the mean of its divisors is an integer number (3010596816).

Almost surely, 2^11666062631 is an apocalyptic number.

11666062631 is a deficient number, since it is larger than the sum of its proper divisors (376324633).

11666062631 is an equidigital number, since it uses as much as digits as its factorization.

11666062631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376324632.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 11666062631 in words is "eleven billion, six hundred sixty-six million, sixty-two thousand, six hundred thirty-one".