2021461655320 has 64 divisors (see below), whose sum is σ = 4628765010240. Its totient is φ = 794358835200.

The previous prime is 2021461655207. The next prime is 2021461655351. The reversal of 2021461655320 is 235561641202.

It is a self number, because there is not a number n which added to its sum of digits gives 2021461655320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 468477 + ... + 2064556.

It is an arithmetic number, because the mean of its divisors is an integer number (72324453285).

Almost surely, 2^{2021461655320} is an apocalyptic number.

2021461655320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021461655320 is an abundant number, since it is smaller than the sum of its proper divisors (2607303354920).

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

2021461655320 is a wasteful number, since it uses less digits than its factorization.

2021461655320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2533396 (or 2533392 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 2021461655320 in words is "two trillion, twenty-one billion, four hundred sixty-one million, six hundred fifty-five thousand, three hundred twenty".