42879128331654 has 48 divisors (see below), whose sum is σ = 96203643400800. Its totient is φ = 13786501978368.

The previous prime is 42879128331623. The next prime is 42879128331701. The reversal of 42879128331654 is 45613382197824.

It is a happy number.

42879128331654 is a `hidden beast` number, since 4 + 287 + 9 + 12 + 8 + 331 + 6 + 5 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 42879128331591 and 42879128331600.

It is a congruent number.

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, 40178914 + ... + 41232309.

It is an arithmetic number, because the mean of its divisors is an integer number (2004242570850).

Almost surely, 2^{42879128331654} is an apocalyptic number.

42879128331654 is an abundant number, since it is smaller than the sum of its proper divisors (53324515069146).

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

42879128331654 is a wasteful number, since it uses less digits than its factorization.

42879128331654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81412269 (or 81412266 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 63.

The spelling of 42879128331654 in words is "forty-two trillion, eight hundred seventy-nine billion, one hundred twenty-eight million, three hundred thirty-one thousand, six hundred fifty-four".