11666530522 has 8 divisors (see below), whose sum is σ = 17516739636. Its totient is φ = 5827617312.

The previous prime is 11666530489. The next prime is 11666530523. The reversal of 11666530522 is 22503566611.

It can be written as a sum of positive squares in 2 ways, for example, as 8522797761 + 3143732761 = 92319^2 + 56069^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×11666530522² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11666530523) 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, 2821393 + ... + 2825524.

Almost surely, 2^11666530522 is an apocalyptic number.

11666530522 is a deficient number, since it is larger than the sum of its proper divisors (5850209114).

11666530522 is a wasteful number, since it uses less digits than its factorization.

11666530522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5647952.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 11666530522 in words is "eleven billion, six hundred sixty-six million, five hundred thirty thousand, five hundred twenty-two".