18664100200463 has 4 divisors (see below), whose sum is σ = 19016253034488. Its totient is φ = 18311947366440.

The previous prime is 18664100200381. The next prime is 18664100200541. The reversal of 18664100200463 is 36400200146681.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18664100200463 - 2³⁶ = 18595380723727 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18664100200463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18664100200663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176076416933 + ... + 176076417038.

It is an arithmetic number, because the mean of its divisors is an integer number (4754063258622).

Almost surely, 2^{18664100200463} is an apocalyptic number.

18664100200463 is a deficient number, since it is larger than the sum of its proper divisors (352152834025).

18664100200463 is an equidigital number, since it uses as much as digits as its factorization.

18664100200463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352152834024.

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 18664100200463 in words is "eighteen trillion, six hundred sixty-four billion, one hundred million, two hundred thousand, four hundred sixty-three".