561306623517742 has 16 divisors (see below), whose sum is σ = 847174197334464. Its totient is φ = 278920389600000.

The previous prime is 561306623517719. The next prime is 561306623517767. The reversal of 561306623517742 is 247715326603165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1291080759 + ... + 1291515442.

It is an arithmetic number, because the mean of its divisors is an integer number (52948387333404).

Almost surely, 2^{561306623517742} is an apocalyptic number.

561306623517742 is a deficient number, since it is larger than the sum of its proper divisors (285867573816722).

561306623517742 is a wasteful number, since it uses less digits than its factorization.

561306623517742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582596875.

The product of its (nonzero) digits is 38102400, while the sum is 58.

The spelling of 561306623517742 in words is "five hundred sixty-one trillion, three hundred six billion, six hundred twenty-three million, five hundred seventeen thousand, seven hundred forty-two".