13153855785 has 32 divisors (see below), whose sum is σ = 24058122240. Its totient is φ = 6011851968.

The previous prime is 13153855783. The next prime is 13153855801. The reversal of 13153855785 is 58755835131.

It is not a de Polignac number, because 13153855785 - 2¹ = 13153855783 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13153855783) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 579276 + ... + 601554.

It is an arithmetic number, because the mean of its divisors is an integer number (751816320).

Almost surely, 2^13153855785 is an apocalyptic number.

13153855785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13153855785 is a deficient number, since it is larger than the sum of its proper divisors (10904266455).

13153855785 is a wasteful number, since it uses less digits than its factorization.

13153855785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27917.

The product of its digits is 2520000, while the sum is 51.

The spelling of 13153855785 in words is "thirteen billion, one hundred fifty-three million, eight hundred fifty-five thousand, seven hundred eighty-five".