561710017601 has 4 divisors (see below), whose sum is σ = 564040764804. Its totient is φ = 559379270400.

The previous prime is 561710017567. The next prime is 561710017643. The reversal of 561710017601 is 106710017165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 106710017165 = 5 ⋅21342003433.

It can be written as a sum of positive squares in 2 ways, for example, as 251462131600 + 310247886001 = 501460^2 + 556999^2 .

It is a cyclic number.

It is not a de Polignac number, because 561710017601 - 2³⁸ = 286832110657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (561710011601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1165373240 + ... + 1165373721.

It is an arithmetic number, because the mean of its divisors is an integer number (141010191201).

Almost surely, 2^561710017601 is an apocalyptic number.

It is an amenable number.

561710017601 is a deficient number, since it is larger than the sum of its proper divisors (2330747203).

561710017601 is a wasteful number, since it uses less digits than its factorization.

561710017601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330747202.

The product of its (nonzero) digits is 8820, while the sum is 35.

The spelling of 561710017601 in words is "five hundred sixty-one billion, seven hundred ten million, seventeen thousand, six hundred one".