11566162215 has 24 divisors (see below), whose sum is σ = 20083667760. Its totient is φ = 6157649664.

The previous prime is 11566162213. The next prime is 11566162241. The reversal of 11566162215 is 51226166511.

11566162215 is a `hidden beast` number, since 1 + 1 + 5 + 6 + 616 + 22 + 15 = 666.

It is not a de Polignac number, because 11566162215 - 2¹ = 11566162213 is a prime.

It is a super-2 number, since 2×11566162215² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11566162215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11566162213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 202930 + ... + 253599.

It is an arithmetic number, because the mean of its divisors is an integer number (836819490).

Almost surely, 2^11566162215 is an apocalyptic number.

11566162215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11566162215 is a deficient number, since it is larger than the sum of its proper divisors (8517505545).

11566162215 is a wasteful number, since it uses less digits than its factorization.

11566162215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457103 (or 457100 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The spelling of 11566162215 in words is "eleven billion, five hundred sixty-six million, one hundred sixty-two thousand, two hundred fifteen".