245326561666 has 8 divisors (see below), whose sum is σ = 375819413760. Its totient is φ = 120053423748.

The previous prime is 245326561637. The next prime is 245326561687. The reversal of 245326561666 is 666165623542.

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

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, 1304928426 + ... + 1304928613.

It is an arithmetic number, because the mean of its divisors is an integer number (46977426720).

Almost surely, 2^245326561666 is an apocalyptic number.

245326561666 is a deficient number, since it is larger than the sum of its proper divisors (130492852094).

245326561666 is a wasteful number, since it uses less digits than its factorization.

245326561666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2609857088.

The product of its digits is 9331200, while the sum is 52.

The spelling of 245326561666 in words is "two hundred forty-five billion, three hundred twenty-six million, five hundred sixty-one thousand, six hundred sixty-six".