11644644260 has 12 divisors (see below), whose sum is σ = 24453752988. Its totient is φ = 4657857696.

The previous prime is 11644644259. The next prime is 11644644281. The reversal of 11644644260 is 6244644611.

It can be written as a sum of positive squares in 2 ways, for example, as 2882186596 + 8762457664 = 53686^2 + 93608^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291116087 + ... + 291116126.

It is an arithmetic number, because the mean of its divisors is an integer number (2037812749).

Almost surely, 2^11644644260 is an apocalyptic number.

11644644260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11644644260 is an abundant number, since it is smaller than the sum of its proper divisors (12809108728).

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

11644644260 is a wasteful number, since it uses less digits than its factorization.

11644644260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582232222 (or 582232220 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 38.

The spelling of 11644644260 in words is "eleven billion, six hundred forty-four million, six hundred forty-four thousand, two hundred sixty".