11500651968 has 224 divisors, whose sum is σ = 34697456640. Its totient is φ = 3332689920.

The previous prime is 11500651951. The next prime is 11500651993. The reversal of 11500651968 is 86915600511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9341913 + ... + 9343143.

It is an arithmetic number, because the mean of its divisors is an integer number (154899360).

Almost surely, 2^11500651968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11500651968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17348728320).

11500651968 is an abundant number, since it is smaller than the sum of its proper divisors (23196804672).

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

11500651968 is a wasteful number, since it uses less digits than its factorization.

11500651968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475 (or 1465 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 42.

The spelling of 11500651968 in words is "eleven billion, five hundred million, six hundred fifty-one thousand, nine hundred sixty-eight".