23737366722649 has 2 divisors, whose sum is σ = 23737366722650. Its totient is φ = 23737366722648.

The previous prime is 23737366722541. The next prime is 23737366722659. The reversal of 23737366722649 is 94622766373732.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23217633867024 + 519732855625 = 4818468^2 + 720925^2 .

It is a cyclic number.

It is not a de Polignac number, because 23737366722649 - 2¹¹ = 23737366720601 is a prime.

It is not a weakly prime, because it can be changed into another prime (23737366722659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11868683361324 + 11868683361325.

It is an arithmetic number, because the mean of its divisors is an integer number (11868683361325).

Almost surely, 2^{23737366722649} is an apocalyptic number.

It is an amenable number.

23737366722649 is a deficient number, since it is larger than the sum of its proper divisors (1).

23737366722649 is an equidigital number, since it uses as much as digits as its factorization.

23737366722649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576108288, while the sum is 67.

The spelling of 23737366722649 in words is "twenty-three trillion, seven hundred thirty-seven billion, three hundred sixty-six million, seven hundred twenty-two thousand, six hundred forty-nine".