500544371021 has 2 divisors, whose sum is σ = 500544371022. Its totient is φ = 500544371020.

The previous prime is 500544370979. The next prime is 500544371023. The reversal of 500544371021 is 120173445005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 283248548521 + 217295822500 = 532211^2 + 466150^2 .

It is a cyclic number.

It is not a de Polignac number, because 500544371021 - 2³⁸ = 225666464077 is a prime.

Together with 500544371023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (500544371023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250272185510 + 250272185511.

It is an arithmetic number, because the mean of its divisors is an integer number (250272185511).

Almost surely, 2^500544371021 is an apocalyptic number.

It is an amenable number.

500544371021 is a deficient number, since it is larger than the sum of its proper divisors (1).

500544371021 is an equidigital number, since it uses as much as digits as its factorization.

500544371021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 32.

The spelling of 500544371021 in words is "five hundred billion, five hundred forty-four million, three hundred seventy-one thousand, twenty-one".