13556977537 has 8 divisors (see below), whose sum is σ = 13814504640. Its totient is φ = 13299514800.

The previous prime is 13556977531. The next prime is 13556977543. The reversal of 13556977537 is 73577965531.

It is an interprime number because it is at equal distance from previous prime (13556977531) and next prime (13556977543).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13556977537 - 2⁷ = 13556977409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13556977531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 762414 + ... + 779992.

It is an arithmetic number, because the mean of its divisors is an integer number (1726813080).

Almost surely, 2^13556977537 is an apocalyptic number.

It is an amenable number.

13556977537 is a deficient number, since it is larger than the sum of its proper divisors (257527103).

13556977537 is a wasteful number, since it uses less digits than its factorization.

13556977537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32183.

The product of its digits is 20837250, while the sum is 58.

The spelling of 13556977537 in words is "thirteen billion, five hundred fifty-six million, nine hundred seventy-seven thousand, five hundred thirty-seven".