561165614997 has 16 divisors (see below), whose sum is σ = 806621836608. Its totient is φ = 344970299520.

The previous prime is 561165614993. The next prime is 561165615007. The reversal of 561165614997 is 799416561165.

It is not a de Polignac number, because 561165614997 - 2² = 561165614993 is a prime.

It is a super-2 number, since 2×561165614997² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 561165614997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561165614993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7512079 + ... + 7586412.

It is an arithmetic number, because the mean of its divisors is an integer number (50413864788).

Almost surely, 2^561165614997 is an apocalyptic number.

It is an amenable number.

561165614997 is a deficient number, since it is larger than the sum of its proper divisors (245456221611).

561165614997 is a wasteful number, since it uses less digits than its factorization.

561165614997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15099460.

The product of its digits is 12247200, while the sum is 60.

The spelling of 561165614997 in words is "five hundred sixty-one billion, one hundred sixty-five million, six hundred fourteen thousand, nine hundred ninety-seven".