22506688613 has 2 divisors, whose sum is σ = 22506688614. Its totient is φ = 22506688612.

The previous prime is 22506688499. The next prime is 22506688627. The reversal of 22506688613 is 31688660522.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15570797089 + 6935891524 = 124783^2 + 83282^2 .

It is a cyclic number.

It is not a de Polignac number, because 22506688613 - 2¹⁰ = 22506687589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22506688643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11253344306 + 11253344307.

It is an arithmetic number, because the mean of its divisors is an integer number (11253344307).

Almost surely, 2^22506688613 is an apocalyptic number.

It is an amenable number.

22506688613 is a deficient number, since it is larger than the sum of its proper divisors (1).

22506688613 is an equidigital number, since it uses as much as digits as its factorization.

22506688613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 22506688613 in words is "twenty-two billion, five hundred six million, six hundred eighty-eight thousand, six hundred thirteen".