66975828430 has 16 divisors (see below), whose sum is σ = 137778847200. Its totient is φ = 22963141152.

The previous prime is 66975828427. The next prime is 66975828433. The reversal of 66975828430 is 3482857966.

It is an interprime number because it is at equal distance from previous prime (66975828427) and next prime (66975828433).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66975828433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478398705 + ... + 478398844.

It is an arithmetic number, because the mean of its divisors is an integer number (8611177950).

Almost surely, 2^66975828430 is an apocalyptic number.

66975828430 is an abundant number, since it is smaller than the sum of its proper divisors (70803018770).

66975828430 is a wasteful number, since it uses less digits than its factorization.

66975828430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956797563.

The product of its (nonzero) digits is 17418240, while the sum is 58.

The spelling of 66975828430 in words is "sixty-six billion, nine hundred seventy-five million, eight hundred twenty-eight thousand, four hundred thirty".