561861835045 has 8 divisors (see below), whose sum is σ = 770553373824. Its totient is φ = 385276686864.

The previous prime is 561861835039. The next prime is 561861835057. The reversal of 561861835045 is 540538168165.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 561861835045 - 2²¹ = 561859737893 is a prime.

It is a super-3 number, since 3×561861835045³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 561861834983 and 561861835001.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 8026597609 + ... + 8026597678.

It is an arithmetic number, because the mean of its divisors is an integer number (96319171728).

Almost surely, 2^561861835045 is an apocalyptic number.

It is an amenable number.

561861835045 is a deficient number, since it is larger than the sum of its proper divisors (208691538779).

561861835045 is a wasteful number, since it uses less digits than its factorization.

561861835045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16053195299.

The product of its (nonzero) digits is 3456000, while the sum is 52.

The spelling of 561861835045 in words is "five hundred sixty-one billion, eight hundred sixty-one million, eight hundred thirty-five thousand, forty-five".