20864006852 has 24 divisors (see below), whose sum is σ = 39335525376. Its totient is φ = 9625893408.

The previous prime is 20864006851. The next prime is 20864006861. The reversal of 20864006852 is 25860046802.

It is not an unprimeable number, because it can be changed into a prime (20864006851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65063 + ... + 214385.

It is an arithmetic number, because the mean of its divisors is an integer number (1638980224).

Almost surely, 2^20864006852 is an apocalyptic number.

It is an amenable number.

20864006852 is a deficient number, since it is larger than the sum of its proper divisors (18471518524).

20864006852 is a wasteful number, since it uses less digits than its factorization.

20864006852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152027 (or 152025 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 20864006852 in words is "twenty billion, eight hundred sixty-four million, six thousand, eight hundred fifty-two".