11656736828 has 18 divisors (see below), whose sum is σ = 22422360408. Its totient is φ = 5298516520.

The previous prime is 11656736813. The next prime is 11656736837. The reversal of 11656736828 is 82863765611.

It is a self number, because there is not a number n which added to its sum of digits gives 11656736828.

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, 12041600 + ... + 12042567.

Almost surely, 2^11656736828 is an apocalyptic number.

It is an amenable number.

11656736828 is a deficient number, since it is larger than the sum of its proper divisors (10765623580).

11656736828 is a wasteful number, since it uses less digits than its factorization.

11656736828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24084193 (or 24084180 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 53.

The spelling of 11656736828 in words is "eleven billion, six hundred fifty-six million, seven hundred thirty-six thousand, eight hundred twenty-eight".