11315687355 has 72 divisors (see below), whose sum is σ = 23246853552. Its totient is φ = 5075231616.

The previous prime is 11315687347. The next prime is 11315687381. The reversal of 11315687355 is 55378651311.

11315687355 is a `hidden beast` number, since 1 + 1 + 31 + 568 + 7 + 3 + 55 = 666.

It is not a de Polignac number, because 11315687355 - 2³ = 11315687347 is a prime.

It is a super-2 number, since 2×11315687355² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 11315687355.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 68452 + ... + 165278.

It is an arithmetic number, because the mean of its divisors is an integer number (322872966).

Almost surely, 2^11315687355 is an apocalyptic number.

11315687355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11315687355 is an abundant number, since it is smaller than the sum of its proper divisors (11931166197).

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

11315687355 is a wasteful number, since it uses less digits than its factorization.

11315687355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96905 (or 96895 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The spelling of 11315687355 in words is "eleven billion, three hundred fifteen million, six hundred eighty-seven thousand, three hundred fifty-five".