40689816497 has 8 divisors (see below), whose sum is σ = 45014087232. Its totient is φ = 36469745200.

The previous prime is 40689816467. The next prime is 40689816577. The reversal of 40689816497 is 79461898604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40689816497 - 2²⁰ = 40688767921 is a prime.

It is a super-2 number, since 2×40689816497² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40689816407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26049038 + ... + 26050599.

It is an arithmetic number, because the mean of its divisors is an integer number (5626760904).

Almost surely, 2^40689816497 is an apocalyptic number.

It is an amenable number.

40689816497 is a deficient number, since it is larger than the sum of its proper divisors (4324270735).

40689816497 is a wasteful number, since it uses less digits than its factorization.

40689816497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52099719.

The product of its (nonzero) digits is 20901888, while the sum is 62.

The spelling of 40689816497 in words is "forty billion, six hundred eighty-nine million, eight hundred sixteen thousand, four hundred ninety-seven".