667556290280 has 64 divisors (see below), whose sum is σ = 1691403655680. Its totient is φ = 234917164800.

The previous prime is 667556290279. The next prime is 667556290333. The reversal of 667556290280 is 82092655766.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24456899 + ... + 24484178.

It is an arithmetic number, because the mean of its divisors is an integer number (26428182120).

Almost surely, 2^667556290280 is an apocalyptic number.

It is an amenable number.

667556290280 is an abundant number, since it is smaller than the sum of its proper divisors (1023847365400).

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

667556290280 is a wasteful number, since it uses less digits than its factorization.

667556290280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48941130 (or 48941126 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 56.

The spelling of 667556290280 in words is "six hundred sixty-seven billion, five hundred fifty-six million, two hundred ninety thousand, two hundred eighty".