66642044642022 has 8 divisors (see below), whose sum is σ = 133284089284056. Its totient is φ = 22214014880672.

The previous prime is 66642044641981. The next prime is 66642044642053. The reversal of 66642044642022 is 22024644024666.

It is a sphenic number, since it is the product of 3 distinct primes.

66642044642022 is an admirable number.

It is a super-2 number, since 2×66642044642022² (a number of 28 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 in 3 ways as a sum of consecutive naturals, for example, 5553503720163 + ... + 5553503720174.

It is an arithmetic number, because the mean of its divisors is an integer number (16660511160507).

Almost surely, 2^{66642044642022} is an apocalyptic number.

66642044642022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

66642044642022 is a wasteful number, since it uses less digits than its factorization.

66642044642022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11107007440342.

The product of its (nonzero) digits is 5308416, while the sum is 48.

Adding to 66642044642022 its reverse (22024644024666), we get a palindrome (88666688666688).

The spelling of 66642044642022 in words is "sixty-six trillion, six hundred forty-two billion, forty-four million, six hundred forty-two thousand, twenty-two".