78922398105 has 24 divisors (see below), whose sum is σ = 139041431880. Its totient is φ = 41401912320.

The previous prime is 78922398067. The next prime is 78922398127. The reversal of 78922398105 is 50189322987.

It can be written as a sum of positive squares in 4 ways, for example, as 1200206736 + 77722191369 = 34644^2 + 278787^2 .

It is not a de Polignac number, because 78922398105 - 2⁷ = 78922397977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14372920 + ... + 14378409.

It is an arithmetic number, because the mean of its divisors is an integer number (5793392995).

Almost surely, 2^78922398105 is an apocalyptic number.

It is an amenable number.

78922398105 is a deficient number, since it is larger than the sum of its proper divisors (60119033775).

78922398105 is a wasteful number, since it uses less digits than its factorization.

78922398105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28751401 (or 28751398 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 78922398105 in words is "seventy-eight billion, nine hundred twenty-two million, three hundred ninety-eight thousand, one hundred five".