13077755775 has 108 divisors (see below), whose sum is σ = 28257821592. Its totient is φ = 5978266560.

The previous prime is 13077755737. The next prime is 13077755791. The reversal of 13077755775 is 57755777031.

13077755775 is a `hidden beast` number, since 13 + 0 + 7 + 7 + 7 + 557 + 75 = 666.

It is not a de Polignac number, because 13077755775 - 2⁸ = 13077755519 is a prime.

It is a super-2 number, since 2×13077755775² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 275709 + ... + 319641.

Almost surely, 2^13077755775 is an apocalyptic number.

13077755775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13077755775 is an abundant number, since it is smaller than the sum of its proper divisors (15180065817).

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

13077755775 is an equidigital number, since it uses as much as digits as its factorization.

13077755775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43972 (or 43948 counting only the distinct ones).

The product of its (nonzero) digits is 6302625, while the sum is 54.

The spelling of 13077755775 in words is "thirteen billion, seventy-seven million, seven hundred fifty-five thousand, seven hundred seventy-five".