15797745197 has 8 divisors (see below), whose sum is σ = 17014050816. Its totient is φ = 14581595952.

The previous prime is 15797745191. The next prime is 15797745199. The reversal of 15797745197 is 79154779751.

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 15797745197 - 2⁴ = 15797745181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15797745191) 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, 249908 + ... + 306674.

It is an arithmetic number, because the mean of its divisors is an integer number (2126756352).

Almost surely, 2^15797745197 is an apocalyptic number.

It is an amenable number.

15797745197 is a deficient number, since it is larger than the sum of its proper divisors (1216305619).

15797745197 is a wasteful number, since it uses less digits than its factorization.

15797745197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78187.

The product of its digits is 19448100, while the sum is 62.

The spelling of 15797745197 in words is "fifteen billion, seven hundred ninety-seven million, seven hundred forty-five thousand, one hundred ninety-seven".