11620310661 has 12 divisors (see below), whose sum is σ = 17326341760. Its totient is φ = 7496974440.

The previous prime is 11620310659. The next prime is 11620310729. The reversal of 11620310661 is 16601302611.

11620310661 is a `hidden beast` number, since 1 + 1 + 620 + 31 + 0 + 6 + 6 + 1 = 666.

It is not a de Polignac number, because 11620310661 - 2¹ = 11620310659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11620310461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20824651 + ... + 20825208.

Almost surely, 2^11620310661 is an apocalyptic number.

It is an amenable number.

11620310661 is a deficient number, since it is larger than the sum of its proper divisors (5706031099).

11620310661 is a wasteful number, since it uses less digits than its factorization.

11620310661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41649896 (or 41649893 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The spelling of 11620310661 in words is "eleven billion, six hundred twenty million, three hundred ten thousand, six hundred sixty-one".