66582575453 has 2 divisors, whose sum is σ = 66582575454. Its totient is φ = 66582575452.

The previous prime is 66582575443. The next prime is 66582575467. The reversal of 66582575453 is 35457528566.

66582575453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59720606884 + 6861968569 = 244378^2 + 82837^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66582575453 is a prime.

It is a super-4 number, since 4×66582575453⁴ (a number of 44 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66582575443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33291287726 + 33291287727.

It is an arithmetic number, because the mean of its divisors is an integer number (33291287727).

Almost surely, 2^66582575453 is an apocalyptic number.

It is an amenable number.

66582575453 is a deficient number, since it is larger than the sum of its proper divisors (1).

66582575453 is an equidigital number, since it uses as much as digits as its factorization.

66582575453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240000, while the sum is 56.

The spelling of 66582575453 in words is "sixty-six billion, five hundred eighty-two million, five hundred seventy-five thousand, four hundred fifty-three".