23326566493 has 2 divisors, whose sum is σ = 23326566494. Its totient is φ = 23326566492.

The previous prime is 23326566467. The next prime is 23326566509. The reversal of 23326566493 is 39466562332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23217531129 + 109035364 = 152373^2 + 10442^2 .

It is a cyclic number.

It is not a de Polignac number, because 23326566493 - 2²¹ = 23324469341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23326566463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11663283246 + 11663283247.

It is an arithmetic number, because the mean of its divisors is an integer number (11663283247).

Almost surely, 2^23326566493 is an apocalyptic number.

It is an amenable number.

23326566493 is a deficient number, since it is larger than the sum of its proper divisors (1).

23326566493 is an equidigital number, since it uses as much as digits as its factorization.

23326566493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4199040, while the sum is 49.

The spelling of 23326566493 in words is "twenty-three billion, three hundred twenty-six million, five hundred sixty-six thousand, four hundred ninety-three".