66716196430 has 16 divisors (see below), whose sum is σ = 129326781024. Its totient is φ = 24633672480.

The previous prime is 66716196401. The next prime is 66716196451. The reversal of 66716196430 is 3469161766.

It is a happy number.

66716196430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256600626 + ... + 256600885.

It is an arithmetic number, because the mean of its divisors is an integer number (8082923814).

Almost surely, 2^66716196430 is an apocalyptic number.

66716196430 is a deficient number, since it is larger than the sum of its proper divisors (62610584594).

66716196430 is a wasteful number, since it uses less digits than its factorization.

66716196430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513201531.

The product of its (nonzero) digits is 979776, while the sum is 49.

The spelling of 66716196430 in words is "sixty-six billion, seven hundred sixteen million, one hundred ninety-six thousand, four hundred thirty".