23644486553 has 2 divisors, whose sum is σ = 23644486554. Its totient is φ = 23644486552.

The previous prime is 23644486543. The next prime is 23644486561. The reversal of 23644486553 is 35568444632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22599710224 + 1044776329 = 150332^2 + 32323^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23644486553 is a prime.

It is not a weakly prime, because it can be changed into another prime (23644486543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11822243276 + 11822243277.

It is an arithmetic number, because the mean of its divisors is an integer number (11822243277).

Almost surely, 2^23644486553 is an apocalyptic number.

It is an amenable number.

23644486553 is a deficient number, since it is larger than the sum of its proper divisors (1).

23644486553 is an equidigital number, since it uses as much as digits as its factorization.

23644486553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8294400, while the sum is 50.

The spelling of 23644486553 in words is "twenty-three billion, six hundred forty-four million, four hundred eighty-six thousand, five hundred fifty-three".