2021151847680 has 576 divisors, whose sum is σ = 8206715596800. Its totient is φ = 461424107520.

The previous prime is 2021151847657. The next prime is 2021151847697. The reversal of 2021151847680 is 867481511202.

2021151847680 is a `hidden beast` number, since 2 + 0 + 2 + 11 + 518 + 47 + 6 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 222319935 + ... + 222329025.

Almost surely, 2^{2021151847680} is an apocalyptic number.

2021151847680 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 2021151847680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4103357798400).

2021151847680 is an abundant number, since it is smaller than the sum of its proper divisors (6185563749120).

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

2021151847680 is an equidigital number, since it uses as much as digits as its factorization.

2021151847680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10047 (or 10027 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The spelling of 2021151847680 in words is "two trillion, twenty-one billion, one hundred fifty-one million, eight hundred forty-seven thousand, six hundred eighty".