561265462666 has 8 divisors (see below), whose sum is σ = 841947173280. Its totient is φ = 280616404908.

The previous prime is 561265462567. The next prime is 561265462679. The reversal of 561265462666 is 666264562165.

It is a happy number.

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

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, 8120196 + ... + 8189023.

It is an arithmetic number, because the mean of its divisors is an integer number (105243396660).

Almost surely, 2^561265462666 is an apocalyptic number.

561265462666 is a deficient number, since it is larger than the sum of its proper divisors (280681710614).

561265462666 is a wasteful number, since it uses less digits than its factorization.

561265462666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16326428.

The product of its digits is 18662400, while the sum is 55.

The spelling of 561265462666 in words is "five hundred sixty-one billion, two hundred sixty-five million, four hundred sixty-two thousand, six hundred sixty-six".