78807373117 has 4 divisors (see below), whose sum is σ = 85971679776. Its totient is φ = 71643066460.

The previous prime is 78807373103. The next prime is 78807373129. The reversal of 78807373117 is 71137370887.

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 78807373117 - 2¹⁵ = 78807340349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78807373817) 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, 3582153313 + ... + 3582153334.

It is an arithmetic number, because the mean of its divisors is an integer number (21492919944).

Almost surely, 2^78807373117 is an apocalyptic number.

It is an amenable number.

78807373117 is a deficient number, since it is larger than the sum of its proper divisors (7164306659).

78807373117 is a wasteful number, since it uses less digits than its factorization.

78807373117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7164306658.

The product of its (nonzero) digits is 1382976, while the sum is 52.

The spelling of 78807373117 in words is "seventy-eight billion, eight hundred seven million, three hundred seventy-three thousand, one hundred seventeen".