13961525977 has 16 divisors (see below), whose sum is σ = 16002185472. Its totient is φ = 11932462080.

The previous prime is 13961525953. The next prime is 13961525989. The reversal of 13961525977 is 77952516931.

It is not a de Polignac number, because 13961525977 - 2²⁷ = 13827308249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13961525917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4589577 + ... + 4592617.

It is an arithmetic number, because the mean of its divisors is an integer number (1000136592).

Almost surely, 2^13961525977 is an apocalyptic number.

It is an amenable number.

13961525977 is a deficient number, since it is larger than the sum of its proper divisors (2040659495).

13961525977 is a wasteful number, since it uses less digits than its factorization.

13961525977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4728.

The product of its digits is 3572100, while the sum is 55.

The spelling of 13961525977 in words is "thirteen billion, nine hundred sixty-one million, five hundred twenty-five thousand, nine hundred seventy-seven".