13115777050 has 12 divisors (see below), whose sum is σ = 24395345406. Its totient is φ = 5246310800.

The previous prime is 13115777039. The next prime is 13115777069. The reversal of 13115777050 is 5077751131.

It can be written as a sum of positive squares in 3 ways, for example, as 8467128289 + 4648648761 = 92017^2 + 68181^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131157721 + ... + 131157820.

Almost surely, 2^13115777050 is an apocalyptic number.

13115777050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13115777050 is a deficient number, since it is larger than the sum of its proper divisors (11279568356).

13115777050 is a wasteful number, since it uses less digits than its factorization.

13115777050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262315553 (or 262315548 counting only the distinct ones).

The product of its (nonzero) digits is 25725, while the sum is 37.

The spelling of 13115777050 in words is "thirteen billion, one hundred fifteen million, seven hundred seventy-seven thousand, fifty".