66807605222 has 4 divisors (see below), whose sum is σ = 100211407836. Its totient is φ = 33403802610.

The previous prime is 66807605203. The next prime is 66807605239. The reversal of 66807605222 is 22250670866.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×66807605222² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16701901304 + ... + 16701901307.

It is an arithmetic number, because the mean of its divisors is an integer number (25052851959).

Almost surely, 2^66807605222 is an apocalyptic number.

66807605222 is a deficient number, since it is larger than the sum of its proper divisors (33403802614).

66807605222 is a wasteful number, since it uses less digits than its factorization.

66807605222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33403802613.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 66807605222 in words is "sixty-six billion, eight hundred seven million, six hundred five thousand, two hundred twenty-two".