42821804922623 has 2 divisors, whose sum is σ = 42821804922624. Its totient is φ = 42821804922622.

The previous prime is 42821804922587. The next prime is 42821804922629. The reversal of 42821804922623 is 32622940812824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42821804922623 - 2³⁴ = 42804625053439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42821804922629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21410902461311 + 21410902461312.

It is an arithmetic number, because the mean of its divisors is an integer number (21410902461312).

Almost surely, 2^{42821804922623} is an apocalyptic number.

42821804922623 is a deficient number, since it is larger than the sum of its proper divisors (1).

42821804922623 is an equidigital number, since it uses as much as digits as its factorization.

42821804922623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5308416, while the sum is 53.

The spelling of 42821804922623 in words is "forty-two trillion, eight hundred twenty-one billion, eight hundred four million, nine hundred twenty-two thousand, six hundred twenty-three".