13511015055 has 48 divisors (see below), whose sum is σ = 24537056544. Its totient is φ = 7131525120.

The previous prime is 13511015039. The next prime is 13511015057. The reversal of 13511015055 is 55051011531.

13511015055 is a `hidden beast` number, since 1 + 3 + 51 + 101 + 505 + 5 = 666.

It is not a de Polignac number, because 13511015055 - 2⁴ = 13511015039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13511015057) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60535 + ... + 175175.

It is an arithmetic number, because the mean of its divisors is an integer number (511188678).

Almost surely, 2^13511015055 is an apocalyptic number.

13511015055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13511015055 is a deficient number, since it is larger than the sum of its proper divisors (11026041489).

13511015055 is an equidigital number, since it uses as much as digits as its factorization.

13511015055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114758 (or 114746 counting only the distinct ones).

The product of its (nonzero) digits is 1875, while the sum is 27.

Adding to 13511015055 its reverse (55051011531), we get a palindrome (68562026586).

The spelling of 13511015055 in words is "thirteen billion, five hundred eleven million, fifteen thousand, fifty-five".