11731764520 has 64 divisors (see below), whose sum is σ = 30592339200. Its totient is φ = 3965660160.

The previous prime is 11731764511. The next prime is 11731764533. The reversal of 11731764520 is 2546713711.

It is a self number, because there is not a number n which added to its sum of digits gives 11731764520.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275185 + ... + 314944.

It is an arithmetic number, because the mean of its divisors is an integer number (478005300).

Almost surely, 2^11731764520 is an apocalyptic number.

11731764520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11731764520 is an abundant number, since it is smaller than the sum of its proper divisors (18860574680).

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

11731764520 is a wasteful number, since it uses less digits than its factorization.

11731764520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590218 (or 590214 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The spelling of 11731764520 in words is "eleven billion, seven hundred thirty-one million, seven hundred sixty-four thousand, five hundred twenty".