42890878066394 has 16 divisors (see below), whose sum is σ = 64547135585856. Its totient is φ = 21375168919200.

The previous prime is 42890878066301. The next prime is 42890878066427. The reversal of 42890878066394 is 49366087809824.

42890878066394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32253134 + ... + 33556614.

It is an arithmetic number, because the mean of its divisors is an integer number (4034195974116).

Almost surely, 2^{42890878066394} is an apocalyptic number.

42890878066394 is a deficient number, since it is larger than the sum of its proper divisors (21656257519462).

42890878066394 is a wasteful number, since it uses less digits than its factorization.

42890878066394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1357381.

The product of its (nonzero) digits is 1003290624, while the sum is 74.

The spelling of 42890878066394 in words is "forty-two trillion, eight hundred ninety billion, eight hundred seventy-eight million, sixty-six thousand, three hundred ninety-four".