660280226080 has 48 divisors (see below), whose sum is σ = 1575993638520. Its totient is φ = 261389279232.

The previous prime is 660280226051. The next prime is 660280226141. The reversal of 660280226080 is 80622082066.

It can be written as a sum of positive squares in 4 ways, for example, as 432800831376 + 227479394704 = 657876^2 + 476948^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 21256395 + ... + 21287434.

Almost surely, 2^660280226080 is an apocalyptic number.

It is an amenable number.

660280226080 is an abundant number, since it is smaller than the sum of its proper divisors (915713412440).

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

660280226080 is a wasteful number, since it uses less digits than its factorization.

660280226080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42543941 (or 42543933 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The spelling of 660280226080 in words is "six hundred sixty billion, two hundred eighty million, two hundred twenty-six thousand, eighty".