11647825155 has 12 divisors (see below), whose sum is σ = 20189563680. Its totient is φ = 6212173392.

The previous prime is 11647825141. The next prime is 11647825157. The reversal of 11647825155 is 55152874611.

11647825155 is a `hidden beast` number, since 1 + 1 + 6 + 478 + 25 + 155 = 666.

It is not a de Polignac number, because 11647825155 - 2¹⁷ = 11647694083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 258840559 = 11647825155 / (1 + 1 + 6 + 4 + 7 + 8 + 2 + 5 + 1 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 11647825155.

It is not an unprimeable number, because it can be changed into a prime (11647825157) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129420235 + ... + 129420324.

It is an arithmetic number, because the mean of its divisors is an integer number (1682463640).

Almost surely, 2^11647825155 is an apocalyptic number.

11647825155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11647825155 is a deficient number, since it is larger than the sum of its proper divisors (8541738525).

11647825155 is a wasteful number, since it uses less digits than its factorization.

11647825155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258840570 (or 258840567 counting only the distinct ones).

The product of its digits is 336000, while the sum is 45.

The spelling of 11647825155 in words is "eleven billion, six hundred forty-seven million, eight hundred twenty-five thousand, one hundred fifty-five".