13739596581 has 8 divisors (see below), whose sum is σ = 18322676064. Its totient is φ = 9158124080.

The previous prime is 13739596579. The next prime is 13739596609. The reversal of 13739596581 is 18569593731.

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 13739596581 - 2¹ = 13739596579 is a prime.

It is a super-2 number, since 2×13739596581² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13739596781) 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, 381651 + ... + 416096.

It is an arithmetic number, because the mean of its divisors is an integer number (2290334508).

Almost surely, 2^13739596581 is an apocalyptic number.

It is an amenable number.

13739596581 is a deficient number, since it is larger than the sum of its proper divisors (4583079483).

13739596581 is an equidigital number, since it uses as much as digits as its factorization.

13739596581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803491.

The product of its digits is 6123600, while the sum is 57.

The spelling of 13739596581 in words is "thirteen billion, seven hundred thirty-nine million, five hundred ninety-six thousand, five hundred eighty-one".