66282613633 has 12 divisors (see below), whose sum is σ = 69515117028. Its totient is φ = 63162032640.

The previous prime is 66282613589. The next prime is 66282613693. The reversal of 66282613633 is 33631628266.

66282613633 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 23486175504 + 42796438129 = 153252^2 + 206873^2 .

It is not a de Polignac number, because 66282613633 - 2³³ = 57692679041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66282613693) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 361360 + ... + 512977.

It is an arithmetic number, because the mean of its divisors is an integer number (5792926419).

Almost surely, 2^66282613633 is an apocalyptic number.

It is an amenable number.

66282613633 is a deficient number, since it is larger than the sum of its proper divisors (3232503395).

66282613633 is an equidigital number, since it uses as much as digits as its factorization.

66282613633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874464 (or 874421 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 46.

The spelling of 66282613633 in words is "sixty-six billion, two hundred eighty-two million, six hundred thirteen thousand, six hundred thirty-three".