66448882480660 has 48 divisors (see below), whose sum is σ = 147752462612160. Its totient is φ = 25015809784320.

The previous prime is 66448882480657. The next prime is 66448882480663. The reversal of 66448882480660 is 6608428884466.

It is an interprime number because it is at equal distance from previous prime (66448882480657) and next prime (66448882480663).

It is a self number, because there is not a number n which added to its sum of digits gives 66448882480660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66448882480663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36766051 + ... + 38531029.

It is an arithmetic number, because the mean of its divisors is an integer number (3078176304420).

Almost surely, 2^{66448882480660} is an apocalyptic number.

It is an amenable number.

66448882480660 is an abundant number, since it is smaller than the sum of its proper divisors (81303580131500).

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

66448882480660 is a wasteful number, since it uses less digits than its factorization.

66448882480660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875736 (or 1875734 counting only the distinct ones).

The product of its (nonzero) digits is 679477248, while the sum is 70.

The spelling of 66448882480660 in words is "sixty-six trillion, four hundred forty-eight billion, eight hundred eighty-two million, four hundred eighty thousand, six hundred sixty".