13394557697 has 8 divisors (see below), whose sum is σ = 13480497576. Its totient is φ = 13308716032.

The previous prime is 13394557681. The next prime is 13394557711. The reversal of 13394557697 is 79675549331.

It can be written as a sum of positive squares in 4 ways, for example, as 647244481 + 12747313216 = 25441^2 + 112904^2 .

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 13394557697 - 2⁴ = 13394557681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13394557597) 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, 259553 + ... + 306849.

It is an arithmetic number, because the mean of its divisors is an integer number (1685062197).

Almost surely, 2^13394557697 is an apocalyptic number.

It is an amenable number.

13394557697 is a deficient number, since it is larger than the sum of its proper divisors (85939879).

13394557697 is a wasteful number, since it uses less digits than its factorization.

13394557697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49107.

The product of its digits is 21432600, while the sum is 59.

The spelling of 13394557697 in words is "thirteen billion, three hundred ninety-four million, five hundred fifty-seven thousand, six hundred ninety-seven".