78854879923 has 8 divisors (see below), whose sum is σ = 79985958080. Its totient is φ = 77727124800.

The previous prime is 78854879869. The next prime is 78854879963. The reversal of 78854879923 is 32997845887.

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

It is a cyclic number.

It is not a de Polignac number, because 78854879923 - 2²⁵ = 78821325491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78854879963) 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, 782940 + ... + 877897.

It is an arithmetic number, because the mean of its divisors is an integer number (9998244760).

Almost surely, 2^78854879923 is an apocalyptic number.

78854879923 is a deficient number, since it is larger than the sum of its proper divisors (1131078157).

78854879923 is a wasteful number, since it uses less digits than its factorization.

78854879923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661517.

The product of its digits is 243855360, while the sum is 70.

The spelling of 78854879923 in words is "seventy-eight billion, eight hundred fifty-four million, eight hundred seventy-nine thousand, nine hundred twenty-three".