78097910907 has 4 divisors (see below), whose sum is σ = 104130547880. Its totient is φ = 52065273936.

The previous prime is 78097910899. The next prime is 78097910921. The reversal of 78097910907 is 70901979087.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 78097910907 - 2³ = 78097910899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78097910927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13016318482 + ... + 13016318487.

It is an arithmetic number, because the mean of its divisors is an integer number (26032636970).

Almost surely, 2^78097910907 is an apocalyptic number.

78097910907 is a deficient number, since it is larger than the sum of its proper divisors (26032636973).

78097910907 is a wasteful number, since it uses less digits than its factorization.

78097910907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26032636972.

The product of its (nonzero) digits is 2000376, while the sum is 57.

The spelling of 78097910907 in words is "seventy-eight billion, ninety-seven million, nine hundred ten thousand, nine hundred seven".