20564152502 has 8 divisors (see below), whose sum is σ = 30849632136. Its totient is φ = 10280941792.

The previous prime is 20564152421. The next prime is 20564152507. The reversal of 20564152502 is 20525146502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20564152507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 544388 + ... + 580935.

It is an arithmetic number, because the mean of its divisors is an integer number (3856204017).

Almost surely, 2^20564152502 is an apocalyptic number.

20564152502 is a deficient number, since it is larger than the sum of its proper divisors (10285479634).

20564152502 is a wasteful number, since it uses less digits than its factorization.

20564152502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134462.

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 20564152502 in words is "twenty billion, five hundred sixty-four million, one hundred fifty-two thousand, five hundred two".