561255670864353 has 16 divisors (see below), whose sum is σ = 793875977631936. Its totient is φ = 351487074032640.

The previous prime is 561255670864337. The next prime is 561255670864367. The reversal of 561255670864353 is 353468076552165.

It is not a de Polignac number, because 561255670864353 - 2⁴ = 561255670864337 is a prime.

It is a super-2 number, since 2×561255670864353² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (561255670864313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10521018408 + ... + 10521071753.

It is an arithmetic number, because the mean of its divisors is an integer number (49617248601996).

Almost surely, 2^{561255670864353} is an apocalyptic number.

It is an amenable number.

561255670864353 is a deficient number, since it is larger than the sum of its proper divisors (232620306767583).

561255670864353 is a wasteful number, since it uses less digits than its factorization.

561255670864353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21042090704.

The product of its (nonzero) digits is 544320000, while the sum is 66.

The spelling of 561255670864353 in words is "five hundred sixty-one trillion, two hundred fifty-five billion, six hundred seventy million, eight hundred sixty-four thousand, three hundred fifty-three".