9791515797 has 12 divisors (see below), whose sum is σ = 15186841056. Its totient is φ = 5595151800.

The previous prime is 9791515693. The next prime is 9791515807. The reversal of 9791515797 is 7975151979.

It is not a de Polignac number, because 9791515797 - 2¹⁰ = 9791514773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9791515797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9791515597) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33304329 + ... + 33304622.

It is an arithmetic number, because the mean of its divisors is an integer number (1265570088).

Almost surely, 2^9791515797 is an apocalyptic number.

It is an amenable number.

9791515797 is a deficient number, since it is larger than the sum of its proper divisors (5395325259).

9791515797 is a wasteful number, since it uses less digits than its factorization.

9791515797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66608968 (or 66608961 counting only the distinct ones).

The product of its digits is 6251175, while the sum is 60.

The square root of 9791515797 is about 98952.0883913018. The cubic root of 9791515797 is about 2139.3572324251.

The spelling of 9791515797 in words is "nine billion, seven hundred ninety-one million, five hundred fifteen thousand, seven hundred ninety-seven".