660421407210 has 32 divisors (see below), whose sum is σ = 1593057134592. Its totient is φ = 175218402240.

The previous prime is 660421407193. The next prime is 660421407281. The reversal of 660421407210 is 12704124066.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55867306 + ... + 55879125.

It is an arithmetic number, because the mean of its divisors is an integer number (49783035456).

Almost surely, 2^660421407210 is an apocalyptic number.

660421407210 is an abundant number, since it is smaller than the sum of its proper divisors (932635727382).

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

660421407210 is a wasteful number, since it uses less digits than its factorization.

660421407210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111746638.

The product of its (nonzero) digits is 16128, while the sum is 33.

The spelling of 660421407210 in words is "six hundred sixty billion, four hundred twenty-one million, four hundred seven thousand, two hundred ten".