11857581553 has 8 divisors (see below), whose sum is σ = 11992687616. Its totient is φ = 11722860000.

The previous prime is 11857581521. The next prime is 11857581613. The reversal of 11857581553 is 35518575811.

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 11857581553 - 2⁵ = 11857581521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11857581497 and 11857581506.

It is not an unprimeable number, because it can be changed into a prime (11857581053) 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, 33873 + ... + 157678.

It is an arithmetic number, because the mean of its divisors is an integer number (1499085952).

Almost surely, 2^11857581553 is an apocalyptic number.

It is an amenable number.

11857581553 is a deficient number, since it is larger than the sum of its proper divisors (135106063).

11857581553 is a wasteful number, since it uses less digits than its factorization.

11857581553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192255.

The product of its digits is 840000, while the sum is 49.

The spelling of 11857581553 in words is "eleven billion, eight hundred fifty-seven million, five hundred eighty-one thousand, five hundred fifty-three".