2021382852657 has 16 divisors (see below), whose sum is σ = 3111957109632. Its totient is φ = 1143167915520.

The previous prime is 2021382852583. The next prime is 2021382852661. The reversal of 2021382852657 is 7562582831202.

It is not a de Polignac number, because 2021382852657 - 2⁷ = 2021382852529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021382852157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 496164594 + ... + 496168667.

It is an arithmetic number, because the mean of its divisors is an integer number (194497319352).

Almost surely, 2^{2021382852657} is an apocalyptic number.

It is an amenable number.

2021382852657 is a deficient number, since it is larger than the sum of its proper divisors (1090574256975).

2021382852657 is an equidigital number, since it uses as much as digits as its factorization.

2021382852657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992333368.

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 2021382852657 in words is "two trillion, twenty-one billion, three hundred eighty-two million, eight hundred fifty-two thousand, six hundred fifty-seven".