9788790972495 has 32 divisors (see below), whose sum is σ = 15689060352000. Its totient is φ = 5211697929984.

The previous prime is 9788790972487. The next prime is 9788790972551. The reversal of 9788790972495 is 5942790978879.

It is a happy number.

It is not a de Polignac number, because 9788790972495 - 2³ = 9788790972487 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20263986 + ... + 20741424.

It is an arithmetic number, because the mean of its divisors is an integer number (490283136000).

Almost surely, 2^{9788790972495} is an apocalyptic number.

9788790972495 is a deficient number, since it is larger than the sum of its proper divisors (5900269379505).

9788790972495 is a wasteful number, since it uses less digits than its factorization.

9788790972495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479799.

The product of its (nonzero) digits is 5761082880, while the sum is 84.

The spelling of 9788790972495 in words is "nine trillion, seven hundred eighty-eight billion, seven hundred ninety million, nine hundred seventy-two thousand, four hundred ninety-five".