23444654557 has 2 divisors, whose sum is σ = 23444654558. Its totient is φ = 23444654556.

The previous prime is 23444654509. The next prime is 23444654567. The reversal of 23444654557 is 75545644432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19170894681 + 4273759876 = 138459^2 + 65374^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23444654557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23444654557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23444654567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11722327278 + 11722327279.

It is an arithmetic number, because the mean of its divisors is an integer number (11722327279).

Almost surely, 2^23444654557 is an apocalyptic number.

It is an amenable number.

23444654557 is a deficient number, since it is larger than the sum of its proper divisors (1).

23444654557 is an equidigital number, since it uses as much as digits as its factorization.

23444654557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064000, while the sum is 49.

The spelling of 23444654557 in words is "twenty-three billion, four hundred forty-four million, six hundred fifty-four thousand, five hundred fifty-seven".