11655676642 has 12 divisors (see below), whose sum is σ = 17533558530. Its totient is φ = 5811204608.

The previous prime is 11655676609. The next prime is 11655676717. The reversal of 11655676642 is 24667655611.

It can be written as a sum of positive squares in 3 ways, for example, as 7513595761 + 4142080881 = 86681^2 + 64359^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 225834 + ... + 272602.

Almost surely, 2^11655676642 is an apocalyptic number.

11655676642 is a deficient number, since it is larger than the sum of its proper divisors (5877881888).

11655676642 is an frugal number, since it uses more digits than its factorization.

11655676642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47477 (or 47124 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 49.

The spelling of 11655676642 in words is "eleven billion, six hundred fifty-five million, six hundred seventy-six thousand, six hundred forty-two".