66784013024 has 48 divisors (see below), whose sum is σ = 131833215360. Its totient is φ = 33302699520.

The previous prime is 66784013011. The next prime is 66784013033. The reversal of 66784013024 is 42031048766.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30068234 + ... + 30070454.

It is an arithmetic number, because the mean of its divisors is an integer number (2746525320).

Almost surely, 2^66784013024 is an apocalyptic number.

It is an amenable number.

66784013024 is a deficient number, since it is larger than the sum of its proper divisors (65049202336).

66784013024 is a wasteful number, since it uses less digits than its factorization.

66784013024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4323 (or 4315 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 66784013024 in words is "sixty-six billion, seven hundred eighty-four million, thirteen thousand, twenty-four".