20346666630 has 16 divisors (see below), whose sum is σ = 48831999984. Its totient is φ = 5425777760.

The previous prime is 20346666623. The next prime is 20346666643. The reversal of 20346666630 is 3666664302.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 339111081 + ... + 339111140.

It is an arithmetic number, because the mean of its divisors is an integer number (3051999999).

Almost surely, 2^20346666630 is an apocalyptic number.

20346666630 is an abundant number, since it is smaller than the sum of its proper divisors (28485333354).

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

20346666630 is a wasteful number, since it uses less digits than its factorization.

20346666630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678222231.

The product of its (nonzero) digits is 559872, while the sum is 42.

The spelling of 20346666630 in words is "twenty billion, three hundred forty-six million, six hundred sixty-six thousand, six hundred thirty".