20325271536 has 120 divisors (see below), whose sum is σ = 60368948640. Its totient is φ = 6361694208.

The previous prime is 20325271513. The next prime is 20325271541. The reversal of 20325271536 is 63517252302.

20325271536 is a `hidden beast` number, since 2 + 0 + 3 + 2 + 52 + 71 + 536 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20325271536.

It is a congruent number.

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, 1065216 + ... + 1084128.

It is an arithmetic number, because the mean of its divisors is an integer number (503074572).

Almost surely, 2^20325271536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20325271536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30184474320).

20325271536 is an abundant number, since it is smaller than the sum of its proper divisors (40043677104).

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

20325271536 is a wasteful number, since it uses less digits than its factorization.

20325271536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19383 (or 19374 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The spelling of 20325271536 in words is "twenty billion, three hundred twenty-five million, two hundred seventy-one thousand, five hundred thirty-six".