3966428607500 has 30 divisors (see below), whose sum is σ = 8673786084348. Its totient is φ = 1586571442000.

The previous prime is 3966428607469. The next prime is 3966428607539. The reversal of 3966428607500 is 57068246693.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 793283222 + ... + 793288221.

Almost surely, 2^{3966428607500} is an apocalyptic number.

It is an amenable number.

3966428607500 is an abundant number, since it is smaller than the sum of its proper divisors (4707357476848).

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

3966428607500 is a wasteful number, since it uses less digits than its factorization.

3966428607500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586571467 (or 1586571450 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 56.

The spelling of 3966428607500 in words is "three trillion, nine hundred sixty-six billion, four hundred twenty-eight million, six hundred seven thousand, five hundred".