11257650565 has 16 divisors (see below), whose sum is σ = 15497779968. Its totient is φ = 7690173696.

The previous prime is 11257650539. The next prime is 11257650581. The reversal of 11257650565 is 56505675211.

It is a cyclic number.

It is not a de Polignac number, because 11257650565 - 2⁵ = 11257650533 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 602292 + ... + 620701.

It is an arithmetic number, because the mean of its divisors is an integer number (968611248).

Almost surely, 2^11257650565 is an apocalyptic number.

It is an amenable number.

11257650565 is a deficient number, since it is larger than the sum of its proper divisors (4240129403).

11257650565 is a wasteful number, since it uses less digits than its factorization.

11257650565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223268.

The product of its (nonzero) digits is 315000, while the sum is 43.

The spelling of 11257650565 in words is "eleven billion, two hundred fifty-seven million, six hundred fifty thousand, five hundred sixty-five".