20639983302 has 32 divisors (see below), whose sum is σ = 46618548960. Its totient is φ = 6767206560.

The previous prime is 20639983277. The next prime is 20639983313. The reversal of 20639983302 is 20338993602.

20639983302 is a `hidden beast` number, since 2 + 0 + 639 + 9 + 8 + 3 + 3 + 0 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3129673 + ... + 3136260.

It is an arithmetic number, because the mean of its divisors is an integer number (1456829655).

Almost surely, 2^20639983302 is an apocalyptic number.

20639983302 is an abundant number, since it is smaller than the sum of its proper divisors (25978565658).

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

20639983302 is a wasteful number, since it uses less digits than its factorization.

20639983302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6266005 (or 6265999 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 45.

The spelling of 20639983302 in words is "twenty billion, six hundred thirty-nine million, nine hundred eighty-three thousand, three hundred two".