78907203915 has 8 divisors (see below), whose sum is σ = 126251526288. Its totient is φ = 42083842080.

The previous prime is 78907203911. The next prime is 78907203919. The reversal of 78907203915 is 51930270987.

It is an interprime number because it is at equal distance from previous prime (78907203911) and next prime (78907203919).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78907203915 - 2² = 78907203911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78907203911) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2630240116 + ... + 2630240145.

It is an arithmetic number, because the mean of its divisors is an integer number (15781440786).

Almost surely, 2^78907203915 is an apocalyptic number.

78907203915 is a deficient number, since it is larger than the sum of its proper divisors (47344322373).

78907203915 is a wasteful number, since it uses less digits than its factorization.

78907203915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5260480269.

The product of its (nonzero) digits is 952560, while the sum is 51.

The spelling of 78907203915 in words is "seventy-eight billion, nine hundred seven million, two hundred three thousand, nine hundred fifteen".