23551634121563 has 2 divisors, whose sum is σ = 23551634121564. Its totient is φ = 23551634121562.

The previous prime is 23551634121541. The next prime is 23551634121623. The reversal of 23551634121563 is 36512143615532.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23551634121563 - 2¹⁴ = 23551634105179 is a prime.

It is not a weakly prime, because it can be changed into another prime (23551634121503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11775817060781 + 11775817060782.

It is an arithmetic number, because the mean of its divisors is an integer number (11775817060782).

Almost surely, 2^{23551634121563} is an apocalyptic number.

23551634121563 is a deficient number, since it is larger than the sum of its proper divisors (1).

23551634121563 is an equidigital number, since it uses as much as digits as its factorization.

23551634121563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944000, while the sum is 47.

The spelling of 23551634121563 in words is "twenty-three trillion, five hundred fifty-one billion, six hundred thirty-four million, one hundred twenty-one thousand, five hundred sixty-three".