6181139163915 has 32 divisors (see below), whose sum is σ = 10989089524800. Its totient is φ = 3296488250880.

The previous prime is 6181139163907. The next prime is 6181139163949. The reversal of 6181139163915 is 5193619311816.

6181139163915 is a `hidden beast` number, since 6 + 181 + 1 + 391 + 63 + 9 + 15 = 666.

It is not a de Polignac number, because 6181139163915 - 2³ = 6181139163907 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2980275 + ... + 4609155.

It is an arithmetic number, because the mean of its divisors is an integer number (343409047650).

Almost surely, 2^{6181139163915} is an apocalyptic number.

6181139163915 is a deficient number, since it is larger than the sum of its proper divisors (4807950360885).

6181139163915 is a wasteful number, since it uses less digits than its factorization.

6181139163915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657004 (or 1656998 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 54.

The spelling of 6181139163915 in words is "six trillion, one hundred eighty-one billion, one hundred thirty-nine million, one hundred sixty-three thousand, nine hundred fifteen".