78801011015 has 8 divisors (see below), whose sum is σ = 94575385968. Its totient is φ = 63031360320.

The previous prime is 78801010997. The next prime is 78801011017. The reversal of 78801011015 is 51011010887.

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

It is not a de Polignac number, because 78801011015 - 2²² = 78796816711 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 (78801011017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1144262 + ... + 1211171.

It is an arithmetic number, because the mean of its divisors is an integer number (11821923246).

Almost surely, 2^78801011015 is an apocalyptic number.

78801011015 is a deficient number, since it is larger than the sum of its proper divisors (15774374953).

78801011015 is a wasteful number, since it uses less digits than its factorization.

78801011015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362129.

The product of its (nonzero) digits is 2240, while the sum is 32.

The spelling of 78801011015 in words is "seventy-eight billion, eight hundred one million, eleven thousand, fifteen".