20665298970 has 48 divisors (see below), whose sum is σ = 53737348392. Its totient is φ = 5509969920.

The previous prime is 20665298939. The next prime is 20665298999. The reversal of 20665298970 is 7989256602.

20665298970 is a `hidden beast` number, since 20 + 6 + 6 + 529 + 8 + 97 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2213608401 + 18451690569 = 47049^2 + 135837^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 935250 + ... + 957090.

Almost surely, 2^20665298970 is an apocalyptic number.

20665298970 is an abundant number, since it is smaller than the sum of its proper divisors (33072049422).

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

20665298970 is a wasteful number, since it uses less digits than its factorization.

20665298970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32367 (or 32364 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 20665298970 in words is "twenty billion, six hundred sixty-five million, two hundred ninety-eight thousand, nine hundred seventy".