40459772817 has 12 divisors (see below), whose sum is σ = 59181665920. Its totient is φ = 26631748728.

The previous prime is 40459772809. The next prime is 40459772827. The reversal of 40459772817 is 71827795404.

40459772817 is a `hidden beast` number, since 40 + 4 + 597 + 7 + 2 + 8 + 1 + 7 = 666.

40459772817 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 40459772817 - 2³ = 40459772809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40459772827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28452013 + ... + 28453434.

Almost surely, 2^40459772817 is an apocalyptic number.

It is an amenable number.

40459772817 is a deficient number, since it is larger than the sum of its proper divisors (18721893103).

40459772817 is a wasteful number, since it uses less digits than its factorization.

40459772817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56905532 (or 56905529 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 54.

The spelling of 40459772817 in words is "forty billion, four hundred fifty-nine million, seven hundred seventy-two thousand, eight hundred seventeen".