76398647997 has 16 divisors (see below), whose sum is σ = 116650304000. Its totient is φ = 43568876592.

The previous prime is 76398647953. The next prime is 76398648061. The reversal of 76398647997 is 79974689367.

It is a de Polignac number, because none of the positive numbers 2^k-76398647997 is a prime.

It is a super-2 number, since 2×76398647997² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76398647497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3634843 + ... + 3655800.

It is an arithmetic number, because the mean of its divisors is an integer number (7290644000).

Almost surely, 2^76398647997 is an apocalyptic number.

It is an amenable number.

76398647997 is a deficient number, since it is larger than the sum of its proper divisors (40251656003).

76398647997 is a wasteful number, since it uses less digits than its factorization.

76398647997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7291152.

The product of its digits is 864162432, while the sum is 75.

The spelling of 76398647997 in words is "seventy-six billion, three hundred ninety-eight million, six hundred forty-seven thousand, nine hundred ninety-seven".