215620505631023 has 2 divisors, whose sum is σ = 215620505631024. Its totient is φ = 215620505631022.

The previous prime is 215620505630989. The next prime is 215620505631049. The reversal of 215620505631023 is 320136505026512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 215620505631023 - 2¹⁰ = 215620505629999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215620505633023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107810252815511 + 107810252815512.

It is an arithmetic number, because the mean of its divisors is an integer number (107810252815512).

Almost surely, 2^{215620505631023} is an apocalyptic number.

215620505631023 is a deficient number, since it is larger than the sum of its proper divisors (1).

215620505631023 is an equidigital number, since it uses as much as digits as its factorization.

215620505631023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324000, while the sum is 41.

The spelling of 215620505631023 in words is "two hundred fifteen trillion, six hundred twenty billion, five hundred five million, six hundred thirty-one thousand, twenty-three".