40684613945 has 32 divisors (see below), whose sum is σ = 52307555328. Its totient is φ = 30271223808.

The previous prime is 40684613917. The next prime is 40684613953. The reversal of 40684613945 is 54931648604.

It is not a de Polignac number, because 40684613945 - 2²² = 40680419641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40684613893 and 40684613902.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2589002 + ... + 2604668.

It is an arithmetic number, because the mean of its divisors is an integer number (1634611104).

Almost surely, 2^40684613945 is an apocalyptic number.

It is an amenable number.

40684613945 is a deficient number, since it is larger than the sum of its proper divisors (11622941383).

40684613945 is a wasteful number, since it uses less digits than its factorization.

40684613945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16049.

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 40684613945 in words is "forty billion, six hundred eighty-four million, six hundred thirteen thousand, nine hundred forty-five".