13381787577 has 24 divisors (see below), whose sum is σ = 18514604160. Its totient is φ = 8596845600.

The previous prime is 13381787557. The next prime is 13381787593. The reversal of 13381787577 is 77578718331.

It is not a de Polignac number, because 13381787577 - 2¹⁸ = 13381525433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13381787557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 679327 + ... + 698747.

It is an arithmetic number, because the mean of its divisors is an integer number (771441840).

Almost surely, 2^13381787577 is an apocalyptic number.

It is an amenable number.

13381787577 is a deficient number, since it is larger than the sum of its proper divisors (5132816583).

13381787577 is a wasteful number, since it uses less digits than its factorization.

13381787577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19725 (or 19694 counting only the distinct ones).

The product of its digits is 6914880, while the sum is 57.

The spelling of 13381787577 in words is "thirteen billion, three hundred eighty-one million, seven hundred eighty-seven thousand, five hundred seventy-seven".