11264654640 has 80 divisors (see below), whose sum is σ = 36758361600. Its totient is φ = 2845806336.

The previous prime is 11264654633. The next prime is 11264654671. The reversal of 11264654640 is 4645646211.

It is a tau number, because it is divible by the number of its divisors (80).

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, 1230600 + ... + 1239719.

It is an arithmetic number, because the mean of its divisors is an integer number (459479520).

Almost surely, 2^11264654640 is an apocalyptic number.

11264654640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11264654640 is an abundant number, since it is smaller than the sum of its proper divisors (25493706960).

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

11264654640 is a wasteful number, since it uses less digits than its factorization.

11264654640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470354 (or 2470348 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 11264654640 in words is "eleven billion, two hundred sixty-four million, six hundred fifty-four thousand, six hundred forty".