660215151206212 has 24 divisors (see below), whose sum is σ = 1320433980541760. Its totient is φ = 282948562346400.

The previous prime is 660215151206189. The next prime is 660215151206251. The reversal of 660215151206212 is 212602151512066.

It is a super-3 number, since 3×660215151206212³ (a number of 45 digits) contains 333 as substring.

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, 22552539 + ... + 42767362.

Almost surely, 2^{660215151206212} is an apocalyptic number.

It is an amenable number.

660215151206212 is an abundant number, since it is smaller than the sum of its proper divisors (660218829335548).

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

660215151206212 is a wasteful number, since it uses less digits than its factorization.

660215151206212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65680891 (or 65680889 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The spelling of 660215151206212 in words is "six hundred sixty trillion, two hundred fifteen billion, one hundred fifty-one million, two hundred six thousand, two hundred twelve".