2021897572560 has 320 divisors, whose sum is σ = 7039433256960. Its totient is φ = 533368281600.

The previous prime is 2021897572501. The next prime is 2021897572573. The reversal of 2021897572560 is 652757981202.

2021897572560 is a `hidden beast` number, since 2 + 0 + 2 + 1 + 8 + 9 + 7 + 5 + 72 + 560 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 2021897572497 and 2021897572506.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 233822157 + ... + 233830803.

It is an arithmetic number, because the mean of its divisors is an integer number (21998228928).

Almost surely, 2^{2021897572560} is an apocalyptic number.

2021897572560 is a gapful number since it is divisible by the number (20) 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 2021897572560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3519716628480).

2021897572560 is an abundant number, since it is smaller than the sum of its proper divisors (5017535684400).

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

2021897572560 is a wasteful number, since it uses less digits than its factorization.

2021897572560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9823 (or 9811 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 54.

The spelling of 2021897572560 in words is "two trillion, twenty-one billion, eight hundred ninety-seven million, five hundred seventy-two thousand, five hundred sixty".