40506440733 has 18 divisors (see below), whose sum is σ = 64311880542. Its totient is φ = 24549357360.

The previous prime is 40506440713. The next prime is 40506440759. The reversal of 40506440733 is 33704460504.

It is a happy number.

40506440733 is a `hidden beast` number, since 4 + 0 + 5 + 0 + 644 + 0 + 7 + 3 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 20426983929 + 20079456804 = 142923^2 + 141702^2 .

It is not a de Polignac number, because 40506440733 - 2¹⁶ = 40506375197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40506440713) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18596910 + ... + 18599087.

Almost surely, 2^40506440733 is an apocalyptic number.

It is an amenable number.

40506440733 is a deficient number, since it is larger than the sum of its proper divisors (23805439809).

40506440733 is a wasteful number, since it uses less digits than its factorization.

40506440733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37196025 (or 37196011 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 36.

The spelling of 40506440733 in words is "forty billion, five hundred six million, four hundred forty thousand, seven hundred thirty-three".