561672513841 has 4 divisors (see below), whose sum is σ = 563589485172. Its totient is φ = 559755542512.

The previous prime is 561672513781. The next prime is 561672513901. The reversal of 561672513841 is 148315276165.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (561672513781) and next prime (561672513901).

It can be written as a sum of positive squares in 2 ways, for example, as 477026430241 + 84646083600 = 690671^2 + 290940^2 .

It is a cyclic number.

It is not a de Polignac number, because 561672513841 - 2¹⁹ = 561671989553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561612513841) 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, 958485226 + ... + 958485811.

It is an arithmetic number, because the mean of its divisors is an integer number (140897371293).

Almost surely, 2^561672513841 is an apocalyptic number.

It is an amenable number.

561672513841 is a deficient number, since it is larger than the sum of its proper divisors (1916971331).

561672513841 is a wasteful number, since it uses less digits than its factorization.

561672513841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916971330.

The product of its digits is 1209600, while the sum is 49.

The spelling of 561672513841 in words is "five hundred sixty-one billion, six hundred seventy-two million, five hundred thirteen thousand, eight hundred forty-one".