11656363938 has 16 divisors (see below), whose sum is σ = 23315480640. Its totient is φ = 3884995856.

The previous prime is 11656363937. The next prime is 11656363949. The reversal of 11656363938 is 83936365611.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11656363937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57453 + ... + 163136.

It is an arithmetic number, because the mean of its divisors is an integer number (1457217540).

Almost surely, 2^11656363938 is an apocalyptic number.

11656363938 is an abundant number, since it is smaller than the sum of its proper divisors (11659116702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11656363938 is a wasteful number, since it uses less digits than its factorization.

11656363938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229401.

The product of its digits is 2099520, while the sum is 51.

The spelling of 11656363938 in words is "eleven billion, six hundred fifty-six million, three hundred sixty-three thousand, nine hundred thirty-eight".