561879452159 has 4 divisors (see below), whose sum is σ = 562231288104. Its totient is φ = 561527616216.

The previous prime is 561879452153. The next prime is 561879452179. The reversal of 561879452159 is 951254978165.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561879452159 is a prime.

It is a super-2 number, since 2×561879452159² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561879452153) 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, 175915577 + ... + 175918770.

It is an arithmetic number, because the mean of its divisors is an integer number (140557822026).

Almost surely, 2^561879452159 is an apocalyptic number.

561879452159 is a deficient number, since it is larger than the sum of its proper divisors (351835945).

561879452159 is a wasteful number, since it uses less digits than its factorization.

561879452159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351835944.

The product of its digits is 27216000, while the sum is 62.

The spelling of 561879452159 in words is "five hundred sixty-one billion, eight hundred seventy-nine million, four hundred fifty-two thousand, one hundred fifty-nine".