1722375142666 has 16 divisors (see below), whose sum is σ = 2585510379144. Its totient is φ = 860538599424.

The previous prime is 1722375142597. The next prime is 1722375142693. The reversal of 1722375142666 is 6662415732271.

It can be written as a sum of positive squares in 4 ways, for example, as 1677167453025 + 45207689641 = 1295055^2 + 212621^2 .

It is a super-2 number, since 2×1722375142666² (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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14349436 + ... + 14468968.

Almost surely, 2^{1722375142666} is an apocalyptic number.

1722375142666 is a deficient number, since it is larger than the sum of its proper divisors (863135236478).

1722375142666 is a wasteful number, since it uses less digits than its factorization.

1722375142666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124905.

The product of its digits is 5080320, while the sum is 52.

The spelling of 1722375142666 in words is "one trillion, seven hundred twenty-two billion, three hundred seventy-five million, one hundred forty-two thousand, six hundred sixty-six".