16764233993 has 16 divisors (see below), whose sum is σ = 18313243536. Its totient is φ = 15252572160.

The previous prime is 16764233933. The next prime is 16764234031. The reversal of 16764233993 is 39933246761.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4484713024 + 12279520969 = 66968^2 + 110813^2 .

It is a cyclic number.

It is not a de Polignac number, because 16764233993 - 2⁶ = 16764233929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16764233933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1681403 + ... + 1691343.

It is an arithmetic number, because the mean of its divisors is an integer number (1144577721).

Almost surely, 2^16764233993 is an apocalyptic number.

16764233993 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16764233993 is a deficient number, since it is larger than the sum of its proper divisors (1549009543).

16764233993 is a wasteful number, since it uses less digits than its factorization.

16764233993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11804.

The product of its digits is 4408992, while the sum is 53.

The spelling of 16764233993 in words is "sixteen billion, seven hundred sixty-four million, two hundred thirty-three thousand, nine hundred ninety-three".