33640463999 has 2 divisors, whose sum is σ = 33640464000. Its totient is φ = 33640463998.

The previous prime is 33640463963. The next prime is 33640464017. The reversal of 33640463999 is 99936404633.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33640463999 is a prime.

It is a super-2 number, since 2×33640463999² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33640463939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16820231999 + 16820232000.

It is an arithmetic number, because the mean of its divisors is an integer number (16820232000).

Almost surely, 2^33640463999 is an apocalyptic number.

33640463999 is a deficient number, since it is larger than the sum of its proper divisors (1).

33640463999 is an equidigital number, since it uses as much as digits as its factorization.

33640463999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11337408, while the sum is 56.

The spelling of 33640463999 in words is "thirty-three billion, six hundred forty million, four hundred sixty-three thousand, nine hundred ninety-nine".