40664534800 has 30 divisors (see below), whose sum is σ = 97696545818. Its totient is φ = 16265813760.

The previous prime is 40664534791. The next prime is 40664534861. The reversal of 40664534800 is 843546604.

It can be written as a sum of positive squares in 3 ways, for example, as 562069264 + 40102465536 = 23708^2 + 200256^2 .

It is a super-2 number, since 2×40664534800² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 50830269 + ... + 50831068.

Almost surely, 2^40664534800 is an apocalyptic number.

40664534800 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40664534800 is an abundant number, since it is smaller than the sum of its proper divisors (57032011018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40664534800 is a wasteful number, since it uses less digits than its factorization.

40664534800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101661355 (or 101661344 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 40664534800 in words is "forty billion, six hundred sixty-four million, five hundred thirty-four thousand, eight hundred".