66370167690 has 16 divisors (see below), whose sum is σ = 159288402528. Its totient is φ = 17698711376.

The previous prime is 66370167679. The next prime is 66370167707. The reversal of 66370167690 is 9676107366.

It is a super-2 number, since 2×66370167690² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

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, 1106169432 + ... + 1106169491.

It is an arithmetic number, because the mean of its divisors is an integer number (9955525158).

Almost surely, 2^66370167690 is an apocalyptic number.

66370167690 is an abundant number, since it is smaller than the sum of its proper divisors (92918234838).

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

66370167690 is a wasteful number, since it uses less digits than its factorization.

66370167690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212338933.

The product of its (nonzero) digits is 1714608, while the sum is 51.

The spelling of 66370167690 in words is "sixty-six billion, three hundred seventy million, one hundred sixty-seven thousand, six hundred ninety".