36668423663 has 2 divisors, whose sum is σ = 36668423664. Its totient is φ = 36668423662.

The previous prime is 36668423621. The next prime is 36668423699. The reversal of 36668423663 is 36632486663.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 36668423663 - 2³⁴ = 19488554479 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36668423263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18334211831 + 18334211832.

It is an arithmetic number, because the mean of its divisors is an integer number (18334211832).

Almost surely, 2^36668423663 is an apocalyptic number.

36668423663 is a deficient number, since it is larger than the sum of its proper divisors (1).

36668423663 is an equidigital number, since it uses as much as digits as its factorization.

36668423663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13436928, while the sum is 53.

Subtracting from 36668423663 its reverse (36632486663), we obtain a cube (35937000 = 330³).

The spelling of 36668423663 in words is "thirty-six billion, six hundred sixty-eight million, four hundred twenty-three thousand, six hundred sixty-three".