66440402703024 has 80 divisors (see below), whose sum is σ = 200160591283200. Its totient is φ = 18982972196160.

The previous prime is 66440402703019. The next prime is 66440402703041. The reversal of 66440402703024 is 42030720404466.

It is a super-3 number, since 3×66440402703024³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2017731432 + ... + 2017764359.

It is an arithmetic number, because the mean of its divisors is an integer number (2502007391040).

Almost surely, 2^{66440402703024} is an apocalyptic number.

It is an amenable number.

66440402703024 is an abundant number, since it is smaller than the sum of its proper divisors (133720188580176).

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

66440402703024 is a wasteful number, since it uses less digits than its factorization.

66440402703024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4035495823 (or 4035495803 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 42.

The spelling of 66440402703024 in words is "sixty-six trillion, four hundred forty billion, four hundred two million, seven hundred three thousand, twenty-four".