78254926842 has 16 divisors (see below), whose sum is σ = 156549019392. Its totient is φ = 26078448000.

The previous prime is 78254926801. The next prime is 78254926843. The reversal of 78254926842 is 24862945287.

It is a super-2 number, since 2×78254926842² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78254926843) 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, 1605898 + ... + 1653909.

It is an arithmetic number, because the mean of its divisors is an integer number (9784313712).

Almost surely, 2^78254926842 is an apocalyptic number.

78254926842 is an abundant number, since it is smaller than the sum of its proper divisors (78294092550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78254926842 is a wasteful number, since it uses less digits than its factorization.

78254926842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3263813.

The product of its digits is 15482880, while the sum is 57.

The spelling of 78254926842 in words is "seventy-eight billion, two hundred fifty-four million, nine hundred twenty-six thousand, eight hundred forty-two".