20895962472 has 256 divisors, whose sum is σ = 73243699200. Its totient is φ = 5361776640.

The previous prime is 20895962459. The next prime is 20895962497. The reversal of 20895962472 is 27426959802.

20895962472 is a `hidden beast` number, since 2 + 0 + 8 + 9 + 5 + 9 + 624 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1372888 + ... + 1388024.

It is an arithmetic number, because the mean of its divisors is an integer number (286108200).

Almost surely, 2^20895962472 is an apocalyptic number.

20895962472 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20895962472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36621849600).

20895962472 is an abundant number, since it is smaller than the sum of its proper divisors (52347736728).

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

20895962472 is a wasteful number, since it uses less digits than its factorization.

20895962472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15253 (or 15243 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 20895962472 in words is "twenty billion, eight hundred ninety-five million, nine hundred sixty-two thousand, four hundred seventy-two".