13645138877 has 4 divisors (see below), whose sum is σ = 13645638720. Its totient is φ = 13644639036.

The previous prime is 13645138823. The next prime is 13645138889. The reversal of 13645138877 is 77883154631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13645138877 - 2¹⁴ = 13645122493 is a prime.

It is a super-2 number, since 2×13645138877² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13645138807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206453 + ... + 264410.

It is an arithmetic number, because the mean of its divisors is an integer number (3411409680).

Almost surely, 2^13645138877 is an apocalyptic number.

It is an amenable number.

13645138877 is a deficient number, since it is larger than the sum of its proper divisors (499843).

13645138877 is an equidigital number, since it uses as much as digits as its factorization.

13645138877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499842.

The product of its digits is 3386880, while the sum is 53.

The spelling of 13645138877 in words is "thirteen billion, six hundred forty-five million, one hundred thirty-eight thousand, eight hundred seventy-seven".