20668576302 has 64 divisors (see below), whose sum is σ = 53053056000. Its totient is φ = 5894778240.

The previous prime is 20668576301. The next prime is 20668576303. The reversal of 20668576302 is 20367586602.

It is a happy number.

20668576302 is a `hidden beast` number, since 2 + 0 + 6 + 6 + 8 + 5 + 7 + 630 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (20668576301) and next prime (20668576303).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20668576301) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1013302 + ... + 1033497.

It is an arithmetic number, because the mean of its divisors is an integer number (828954000).

Almost surely, 2^20668576302 is an apocalyptic number.

20668576302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20668576302 is an abundant number, since it is smaller than the sum of its proper divisors (32384479698).

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

20668576302 is a wasteful number, since it uses less digits than its factorization.

20668576302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046838 (or 2046832 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 20668576302 in words is "twenty billion, six hundred sixty-eight million, five hundred seventy-six thousand, three hundred two".