11657908553 has 8 divisors (see below), whose sum is σ = 12022403400. Its totient is φ = 11297230720.

The previous prime is 11657908543. The next prime is 11657908571. The reversal of 11657908553 is 35580975611.

It can be written as a sum of positive squares in 4 ways, for example, as 774620224 + 10883288329 = 27832^2 + 104323^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11657908553 - 2¹² = 11657904457 is a prime.

It is a super-2 number, since 2×11657908553² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11657908513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 948050 + ... + 960267.

It is an arithmetic number, because the mean of its divisors is an integer number (1502800425).

Almost surely, 2^11657908553 is an apocalyptic number.

It is an amenable number.

11657908553 is a deficient number, since it is larger than the sum of its proper divisors (364494847).

11657908553 is a wasteful number, since it uses less digits than its factorization.

11657908553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908507.

The product of its (nonzero) digits is 1134000, while the sum is 50.

The spelling of 11657908553 in words is "eleven billion, six hundred fifty-seven million, nine hundred eight thousand, five hundred fifty-three".