1666926822074 has 8 divisors (see below), whose sum is σ = 2500396585428. Its totient is φ = 833461293600.

The previous prime is 1666926822053. The next prime is 1666926822091. The reversal of 1666926822074 is 4702286296661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1658828082025 + 8098740049 = 1287955^2 + 89993^2 .

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

It is a super-2 number, since 2×1666926822074² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247784 + ... + 1842620.

Almost surely, 2^{1666926822074} is an apocalyptic number.

1666926822074 is a deficient number, since it is larger than the sum of its proper divisors (833469763354).

1666926822074 is a wasteful number, since it uses less digits than its factorization.

1666926822074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2117440.

The product of its (nonzero) digits is 20901888, while the sum is 59.

The spelling of 1666926822074 in words is "one trillion, six hundred sixty-six billion, nine hundred twenty-six million, eight hundred twenty-two thousand, seventy-four".