660281340490 has 32 divisors (see below), whose sum is σ = 1205343887616. Its totient is φ = 260371480320.

The previous prime is 660281340461. The next prime is 660281340491. The reversal of 660281340490 is 94043182066.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (660281340491) 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, 10955779 + ... + 11015881.

It is an arithmetic number, because the mean of its divisors is an integer number (37666996488).

Almost surely, 2^660281340490 is an apocalyptic number.

660281340490 is a deficient number, since it is larger than the sum of its proper divisors (545062547126).

660281340490 is a wasteful number, since it uses less digits than its factorization.

660281340490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75654.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 660281340490 in words is "six hundred sixty billion, two hundred eighty-one million, three hundred forty thousand, four hundred ninety".