11853551568 has 20 divisors (see below), whose sum is σ = 30621675008. Its totient is φ = 3951183840.

The previous prime is 11853551557. The next prime is 11853551581. The reversal of 11853551568 is 86515535811.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 246948991 = 11853551568 / (1 + 1 + 8 + 5 + 3 + 5 + 5 + 1 + 5 + 6 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123474448 + ... + 123474543.

Almost surely, 2^11853551568 is an apocalyptic number.

It is an amenable number.

11853551568 is an abundant number, since it is smaller than the sum of its proper divisors (18768123440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11853551568 is a wasteful number, since it uses less digits than its factorization.

11853551568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246949002 (or 246948996 counting only the distinct ones).

The product of its digits is 720000, while the sum is 48.

The spelling of 11853551568 in words is "eleven billion, eight hundred fifty-three million, five hundred fifty-one thousand, five hundred sixty-eight".