11511304660 has 48 divisors (see below), whose sum is σ = 26323516800. Its totient is φ = 4211754624.

The previous prime is 11511304633. The next prime is 11511304667. The reversal of 11511304660 is 6640311511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11511304667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 511272 + ... + 533311.

It is an arithmetic number, because the mean of its divisors is an integer number (548406600).

Almost surely, 2^11511304660 is an apocalyptic number.

11511304660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11511304660 is an abundant number, since it is smaller than the sum of its proper divisors (14812212140).

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

11511304660 is a wasteful number, since it uses less digits than its factorization.

11511304660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044640 (or 1044638 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The spelling of 11511304660 in words is "eleven billion, five hundred eleven million, three hundred four thousand, six hundred sixty".