11657465573 has 16 divisors (see below), whose sum is σ = 13510604016. Its totient is φ = 9961712640.

The previous prime is 11657465563. The next prime is 11657465581. The reversal of 11657465573 is 37556475611.

It can be written as a sum of positive squares in 8 ways, for example, as 3366088324 + 8291377249 = 58018^2 + 91057^2 .

It is a cyclic number.

It is not a de Polignac number, because 11657465573 - 2⁸ = 11657465317 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11657465503) 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, 418886 + ... + 445847.

It is an arithmetic number, because the mean of its divisors is an integer number (844412751).

Almost surely, 2^11657465573 is an apocalyptic number.

11657465573 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11657465573 is a deficient number, since it is larger than the sum of its proper divisors (1853138443).

11657465573 is a wasteful number, since it uses less digits than its factorization.

11657465573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864824.

The product of its digits is 2646000, while the sum is 50.

The spelling of 11657465573 in words is "eleven billion, six hundred fifty-seven million, four hundred sixty-five thousand, five hundred seventy-three".