84579206278 has 16 divisors (see below), whose sum is σ = 148911653664. Its totient is φ = 35268549120.

The previous prime is 84579206267. The next prime is 84579206279. The reversal of 84579206278 is 87260297548.

It is a happy number.

It is a super-2 number, since 2×84579206278² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84579206279) 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, 81639643 + ... + 81640678.

It is an arithmetic number, because the mean of its divisors is an integer number (9306978354).

Almost surely, 2^84579206278 is an apocalyptic number.

84579206278 is a deficient number, since it is larger than the sum of its proper divisors (64332447386).

84579206278 is a wasteful number, since it uses less digits than its factorization.

84579206278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163280367.

The product of its (nonzero) digits is 13547520, while the sum is 58.

The spelling of 84579206278 in words is "eighty-four billion, five hundred seventy-nine million, two hundred six thousand, two hundred seventy-eight".