472842815262581 has 2 divisors, whose sum is σ = 472842815262582. Its totient is φ = 472842815262580.

The previous prime is 472842815262577. The next prime is 472842815262607. The reversal of 472842815262581 is 185262518248274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 308315144799025 + 164527670463556 = 17558905^2 + 12826834^2 .

It is a cyclic number.

It is not a de Polignac number, because 472842815262581 - 2² = 472842815262577 is a prime.

It is a super-2 number, since 2×472842815262581² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (472842815262511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236421407631290 + 236421407631291.

It is an arithmetic number, because the mean of its divisors is an integer number (236421407631291).

Almost surely, 2^{472842815262581} is an apocalyptic number.

It is an amenable number.

472842815262581 is a deficient number, since it is larger than the sum of its proper divisors (1).

472842815262581 is an equidigital number, since it uses as much as digits as its factorization.

472842815262581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 137625600, while the sum is 65.

The spelling of 472842815262581 in words is "four hundred seventy-two trillion, eight hundred forty-two billion, eight hundred fifteen million, two hundred sixty-two thousand, five hundred eighty-one".