13531053777 has 4 divisors (see below), whose sum is σ = 18041405040. Its totient is φ = 9020702516.

The previous prime is 13531053713. The next prime is 13531053779. The reversal of 13531053777 is 77735013531.

It is a happy number.

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 13531053777 - 2⁶ = 13531053713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13531053779) 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, 2255175627 + ... + 2255175632.

It is an arithmetic number, because the mean of its divisors is an integer number (4510351260).

Almost surely, 2^13531053777 is an apocalyptic number.

It is an amenable number.

13531053777 is a deficient number, since it is larger than the sum of its proper divisors (4510351263).

13531053777 is an equidigital number, since it uses as much as digits as its factorization.

13531053777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510351262.

The product of its (nonzero) digits is 231525, while the sum is 42.

The spelling of 13531053777 in words is "thirteen billion, five hundred thirty-one million, fifty-three thousand, seven hundred seventy-seven".