78867368997 has 4 divisors (see below), whose sum is σ = 105156492000. Its totient is φ = 52578245996.

The previous prime is 78867368971. The next prime is 78867369011. The reversal of 78867368997 is 79986376887.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78867368997 - 2²⁸ = 78598933541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78867368927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13144561497 + ... + 13144561502.

It is an arithmetic number, because the mean of its divisors is an integer number (26289123000).

Almost surely, 2^78867368997 is an apocalyptic number.

It is an amenable number.

78867368997 is a deficient number, since it is larger than the sum of its proper divisors (26289123003).

78867368997 is a wasteful number, since it uses less digits than its factorization.

78867368997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26289123002.

The product of its digits is 1536288768, while the sum is 78.

The spelling of 78867368997 in words is "seventy-eight billion, eight hundred sixty-seven million, three hundred sixty-eight thousand, nine hundred ninety-seven".