22537452520493 has 2 divisors, whose sum is σ = 22537452520494. Its totient is φ = 22537452520492.

The previous prime is 22537452520447. The next prime is 22537452520573. The reversal of 22537452520493 is 39402525473522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22406334662089 + 131117858404 = 4733533^2 + 362102^2 .

It is a cyclic number.

It is not a de Polignac number, because 22537452520493 - 2²⁰ = 22537451471917 is a prime.

It is a super-4 number, since 4×22537452520493⁴ (a number of 55 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22537452520993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11268726260246 + 11268726260247.

It is an arithmetic number, because the mean of its divisors is an integer number (11268726260247).

Almost surely, 2^{22537452520493} is an apocalyptic number.

It is an amenable number.

22537452520493 is a deficient number, since it is larger than the sum of its proper divisors (1).

22537452520493 is an equidigital number, since it uses as much as digits as its factorization.

22537452520493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144000, while the sum is 53.

The spelling of 22537452520493 in words is "twenty-two trillion, five hundred thirty-seven billion, four hundred fifty-two million, five hundred twenty thousand, four hundred ninety-three".