2021357838163 has 2 divisors, whose sum is σ = 2021357838164. Its totient is φ = 2021357838162.

The previous prime is 2021357838161. The next prime is 2021357838187. The reversal of 2021357838163 is 3618387531202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021357838163 - 2¹ = 2021357838161 is a prime.

Together with 2021357838161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2021357838161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010678919081 + 1010678919082.

It is an arithmetic number, because the mean of its divisors is an integer number (1010678919082).

Almost surely, 2^{2021357838163} is an apocalyptic number.

2021357838163 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021357838163 is an equidigital number, since it uses as much as digits as its factorization.

2021357838163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 2021357838163 in words is "two trillion, twenty-one billion, three hundred fifty-seven million, eight hundred thirty-eight thousand, one hundred sixty-three".