13791605997 has 32 divisors (see below), whose sum is σ = 20989463040. Its totient is φ = 7979811840.

The previous prime is 13791605987. The next prime is 13791606013. The reversal of 13791605997 is 79950619731.

It is not a de Polignac number, because 13791605997 - 2⁷ = 13791605869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13791605977) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 678847 + ... + 698867.

It is an arithmetic number, because the mean of its divisors is an integer number (655920720).

Almost surely, 2^13791605997 is an apocalyptic number.

13791605997 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13791605997 is a deficient number, since it is larger than the sum of its proper divisors (7197857043).

13791605997 is a wasteful number, since it uses less digits than its factorization.

13791605997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21093.

The product of its (nonzero) digits is 3214890, while the sum is 57.

The spelling of 13791605997 in words is "thirteen billion, seven hundred ninety-one million, six hundred five thousand, nine hundred ninety-seven".