13150778391 has 48 divisors (see below), whose sum is σ = 20166700320. Its totient is φ = 8247432960.

The previous prime is 13150778369. The next prime is 13150778411. The reversal of 13150778391 is 19387705131.

13150778391 is a `hidden beast` number, since 131 + 507 + 7 + 8 + 3 + 9 + 1 = 666.

It is not a de Polignac number, because 13150778391 - 2⁵ = 13150778359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13150778341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1192981 + ... + 1203953.

It is an arithmetic number, because the mean of its divisors is an integer number (420139590).

Almost surely, 2^13150778391 is an apocalyptic number.

13150778391 is a deficient number, since it is larger than the sum of its proper divisors (7015921929).

13150778391 is a wasteful number, since it uses less digits than its factorization.

13150778391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11136 (or 11133 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The spelling of 13150778391 in words is "thirteen billion, one hundred fifty million, seven hundred seventy-eight thousand, three hundred ninety-one".