83664028723 has 16 divisors (see below), whose sum is σ = 91475930880. Its totient is φ = 75886653600.

The previous prime is 83664028711. The next prime is 83664028739. The reversal of 83664028723 is 32782046638.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 83664028723 - 2⁵ = 83664028691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83664028523) 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, 12729028 + ... + 12735598.

It is an arithmetic number, because the mean of its divisors is an integer number (5717245680).

Almost surely, 2^83664028723 is an apocalyptic number.

83664028723 is a deficient number, since it is larger than the sum of its proper divisors (7811902157).

83664028723 is a wasteful number, since it uses less digits than its factorization.

83664028723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9018.

The product of its (nonzero) digits is 2322432, while the sum is 49.

The spelling of 83664028723 in words is "eighty-three billion, six hundred sixty-four million, twenty-eight thousand, seven hundred twenty-three".