55633263689 has 2 divisors, whose sum is σ = 55633263690. Its totient is φ = 55633263688.

The previous prime is 55633263659. The next prime is 55633263701. The reversal of 55633263689 is 98636233655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42115248400 + 13518015289 = 205220^2 + 116267^2 .

It is a cyclic number.

It is not a de Polignac number, because 55633263689 - 2²⁰ = 55632215113 is a prime.

It is not a weakly prime, because it can be changed into another prime (55633263649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27816631844 + 27816631845.

It is an arithmetic number, because the mean of its divisors is an integer number (27816631845).

Almost surely, 2^55633263689 is an apocalyptic number.

It is an amenable number.

55633263689 is a deficient number, since it is larger than the sum of its proper divisors (1).

55633263689 is an equidigital number, since it uses as much as digits as its factorization.

55633263689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20995200, while the sum is 56.

The spelling of 55633263689 in words is "fifty-five billion, six hundred thirty-three million, two hundred sixty-three thousand, six hundred eighty-nine".