20672446630 has 32 divisors (see below), whose sum is σ = 41456862720. Its totient is φ = 7357309920.

The previous prime is 20672446591. The next prime is 20672446631. The reversal of 20672446630 is 3664427602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20672446631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1994100 + ... + 2004439.

It is an arithmetic number, because the mean of its divisors is an integer number (1295526960).

Almost surely, 2^20672446630 is an apocalyptic number.

20672446630 is an abundant number, since it is smaller than the sum of its proper divisors (20784416090).

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

20672446630 is a wasteful number, since it uses less digits than its factorization.

20672446630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3998604.

The product of its (nonzero) digits is 290304, while the sum is 40.

The spelling of 20672446630 in words is "twenty billion, six hundred seventy-two million, four hundred forty-six thousand, six hundred thirty".