66260585480 has 32 divisors (see below), whose sum is σ = 149099448600. Its totient is φ = 26501899776.

The previous prime is 66260585467. The next prime is 66260585543. The reversal of 66260585480 is 8458506266.

It can be written as a sum of positive squares in 4 ways, for example, as 46227580036 + 20033005444 = 215006^2 + 141538^2 .

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429614 + ... + 563106.

Almost surely, 2^66260585480 is an apocalyptic number.

It is an amenable number.

66260585480 is an abundant number, since it is smaller than the sum of its proper divisors (82838863120).

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

66260585480 is a wasteful number, since it uses less digits than its factorization.

66260585480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145913 (or 145909 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 50.

The spelling of 66260585480 in words is "sixty-six billion, two hundred sixty million, five hundred eighty-five thousand, four hundred eighty".