78946713791871 has 8 divisors (see below), whose sum is σ = 105580298002944. Its totient is φ = 52472136054360.

The previous prime is 78946713791861. The next prime is 78946713791873. The reversal of 78946713791871 is 17819731764987.

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

It is not a de Polignac number, because 78946713791871 - 2¹⁸ = 78946713529727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78946713791873) 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, 39751617231 + ... + 39751619216.

It is an arithmetic number, because the mean of its divisors is an integer number (13197537250368).

Almost surely, 2^{78946713791871} is an apocalyptic number.

78946713791871 is a deficient number, since it is larger than the sum of its proper divisors (26633584211073).

78946713791871 is a wasteful number, since it uses less digits than its factorization.

78946713791871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79503236781.

The product of its digits is 896168448, while the sum is 78.

The spelling of 78946713791871 in words is "seventy-eight trillion, nine hundred forty-six billion, seven hundred thirteen million, seven hundred ninety-one thousand, eight hundred seventy-one".