66660602460 has 48 divisors (see below), whose sum is σ = 186670310400. Its totient is φ = 17774196544.

The previous prime is 66660602441. The next prime is 66660602461. The reversal of 66660602460 is 6420606666.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66660602461) 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, 533881 + ... + 646799.

It is an arithmetic number, because the mean of its divisors is an integer number (3888964800).

Almost surely, 2^66660602460 is an apocalyptic number.

66660602460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66660602460 is an abundant number, since it is smaller than the sum of its proper divisors (120009707940).

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

66660602460 is a wasteful number, since it uses less digits than its factorization.

66660602460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122770 (or 122768 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 42.

The spelling of 66660602460 in words is "sixty-six billion, six hundred sixty million, six hundred two thousand, four hundred sixty".