66280540033 has 4 divisors (see below), whose sum is σ = 66287200000. Its totient is φ = 66273880068.

The previous prime is 66280540013. The next prime is 66280540061. The reversal of 66280540033 is 33004508266.

66280540033 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66280540033 - 2²⁵ = 66246985601 is a prime.

It is a super-2 number, since 2×66280540033² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66280539974 and 66280540001.

It is not an unprimeable number, because it can be changed into a prime (66280540003) 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, 3315033 + ... + 3334966.

It is an arithmetic number, because the mean of its divisors is an integer number (16571800000).

Almost surely, 2^66280540033 is an apocalyptic number.

It is an amenable number.

66280540033 is a deficient number, since it is larger than the sum of its proper divisors (6659967).

66280540033 is an equidigital number, since it uses as much as digits as its factorization.

66280540033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6659966.

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 66280540033 in words is "sixty-six billion, two hundred eighty million, five hundred forty thousand, thirty-three".