66453257860 has 24 divisors (see below), whose sum is σ = 152238373056. Its totient is φ = 24164820960.

The previous prime is 66453257813. The next prime is 66453257861. The reversal of 66453257860 is 6875235466.

It is a junction number, because it is equal to n+sod(n) for n = 66453257798 and 66453257807.

It is not an unprimeable number, because it can be changed into a prime (66453257861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151029912 + ... + 151030351.

It is an arithmetic number, because the mean of its divisors is an integer number (6343265544).

Almost surely, 2^66453257860 is an apocalyptic number.

It is an amenable number.

66453257860 is an abundant number, since it is smaller than the sum of its proper divisors (85785115196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66453257860 is a wasteful number, since it uses less digits than its factorization.

66453257860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302060283 (or 302060281 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 52.

The spelling of 66453257860 in words is "sixty-six billion, four hundred fifty-three million, two hundred fifty-seven thousand, eight hundred sixty".