40815815905 has 16 divisors (see below), whose sum is σ = 51241123584. Its totient is φ = 31178446720.

The previous prime is 40815815891. The next prime is 40815815927. The reversal of 40815815905 is 50951851804.

It is a happy number.

40815815905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40815815905 - 2¹³ = 40815807713 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2108467 + ... + 2127736.

It is an arithmetic number, because the mean of its divisors is an integer number (3202570224).

Almost surely, 2^40815815905 is an apocalyptic number.

It is an amenable number.

40815815905 is a deficient number, since it is larger than the sum of its proper divisors (10425307679).

40815815905 is a wasteful number, since it uses less digits than its factorization.

40815815905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4236296.

The product of its (nonzero) digits is 288000, while the sum is 46.

The spelling of 40815815905 in words is "forty billion, eight hundred fifteen million, eight hundred fifteen thousand, nine hundred five".