6665626212212 has 12 divisors (see below), whose sum is σ = 12725286405216. Its totient is φ = 3029830096440.

The previous prime is 6665626212187. The next prime is 6665626212227. The reversal of 6665626212212 is 2122126265666.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 75745752368 + ... + 75745752455.

It is an arithmetic number, because the mean of its divisors is an integer number (1060440533768).

Almost surely, 2^{6665626212212} is an apocalyptic number.

It is an amenable number.

6665626212212 is a deficient number, since it is larger than the sum of its proper divisors (6059660193004).

6665626212212 is a wasteful number, since it uses less digits than its factorization.

6665626212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151491504838 (or 151491504836 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 47.

The spelling of 6665626212212 in words is "six trillion, six hundred sixty-five billion, six hundred twenty-six million, two hundred twelve thousand, two hundred twelve".