11644088261 has 24 divisors (see below), whose sum is σ = 13168212960. Its totient is φ = 10234404576.

The previous prime is 11644088257. The next prime is 11644088297. The reversal of 11644088261 is 16288044611.

It is a happy number.

It is not a de Polignac number, because 11644088261 - 2² = 11644088257 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11644088201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1557350 + ... + 1564808.

It is an arithmetic number, because the mean of its divisors is an integer number (548675540).

Almost surely, 2^11644088261 is an apocalyptic number.

It is an amenable number.

11644088261 is a deficient number, since it is larger than the sum of its proper divisors (1524124699).

11644088261 is a wasteful number, since it uses less digits than its factorization.

11644088261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7745 (or 7722 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The spelling of 11644088261 in words is "eleven billion, six hundred forty-four million, eighty-eight thousand, two hundred sixty-one".