40450688817 has 32 divisors (see below), whose sum is σ = 67694054400. Its totient is φ = 20872297920.

The previous prime is 40450688797. The next prime is 40450688821. The reversal of 40450688817 is 71888605404.

It is not a de Polignac number, because 40450688817 - 2¹⁰ = 40450687793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40450688817.

It is not an unprimeable number, because it can be changed into a prime (40450688417) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 553203 + ... + 622040.

It is an arithmetic number, because the mean of its divisors is an integer number (2115439200).

Almost surely, 2^40450688817 is an apocalyptic number.

It is an amenable number.

40450688817 is a deficient number, since it is larger than the sum of its proper divisors (27243365583).

40450688817 is a wasteful number, since it uses less digits than its factorization.

40450688817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175413.

The product of its (nonzero) digits is 1720320, while the sum is 51.

The spelling of 40450688817 in words is "forty billion, four hundred fifty million, six hundred eighty-eight thousand, eight hundred seventeen".