40442978685694 has 16 divisors (see below), whose sum is σ = 65332912106448. Its totient is φ = 18665434009152.

The previous prime is 40442978685601. The next prime is 40442978685701. The reversal of 40442978685694 is 49658687924404.

40442978685694 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 40442978685694.

It is a congruent 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, 22283007 + ... + 24029530.

It is an arithmetic number, because the mean of its divisors is an integer number (4083307006653).

Almost surely, 2^{40442978685694} is an apocalyptic number.

40442978685694 is a deficient number, since it is larger than the sum of its proper divisors (24889933420754).

40442978685694 is a wasteful number, since it uses less digits than its factorization.

40442978685694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46346139.

The product of its (nonzero) digits is 3344302080, while the sum is 76.

The spelling of 40442978685694 in words is "forty trillion, four hundred forty-two billion, nine hundred seventy-eight million, six hundred eighty-five thousand, six hundred ninety-four".