13386140778 has 16 divisors (see below), whose sum is σ = 27226049760. Its totient is φ = 4386418896.

The previous prime is 13386140777. The next prime is 13386140857. The reversal of 13386140778 is 87704168331.

It is not an unprimeable number, because it can be changed into a prime (13386140777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18906625 + ... + 18907332.

It is an arithmetic number, because the mean of its divisors is an integer number (1701628110).

Almost surely, 2^13386140778 is an apocalyptic number.

13386140778 is an abundant number, since it is smaller than the sum of its proper divisors (13839908982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13386140778 is a wasteful number, since it uses less digits than its factorization.

13386140778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37814021.

The product of its (nonzero) digits is 677376, while the sum is 48.

The spelling of 13386140778 in words is "thirteen billion, three hundred eighty-six million, one hundred forty thousand, seven hundred seventy-eight".