561056913339 has 32 divisors (see below), whose sum is σ = 810747135744. Its totient is φ = 343069499520.

The previous prime is 561056913311. The next prime is 561056913349. The reversal of 561056913339 is 933319650165.

It is a happy number.

It is not a de Polignac number, because 561056913339 - 2¹³ = 561056905147 is a prime.

It is a super-2 number, since 2×561056913339² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 561056913291 and 561056913300.

It is not an unprimeable number, because it can be changed into a prime (561056913349) 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 31 ways as a sum of consecutive naturals, for example, 41256489 + ... + 41270085.

It is an arithmetic number, because the mean of its divisors is an integer number (25335847992).

Almost surely, 2^561056913339 is an apocalyptic number.

561056913339 is a deficient number, since it is larger than the sum of its proper divisors (249690222405).

561056913339 is a wasteful number, since it uses less digits than its factorization.

561056913339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20267.

The product of its (nonzero) digits is 1968300, while the sum is 51.

The spelling of 561056913339 in words is "five hundred sixty-one billion, fifty-six million, nine hundred thirteen thousand, three hundred thirty-nine".