260661560705860 has 24 divisors (see below), whose sum is σ = 549257500284696. Its totient is φ = 103908772320000.

The previous prime is 260661560705803. The next prime is 260661560705863. The reversal of 260661560705860 is 68507065166062.

It can be written as a sum of positive squares in 4 ways, for example, as 12165683588356 + 248495877117504 = 3487934^2 + 15763752^2 .

It is a super-2 number, since 2×260661560705860² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 260661560705795 and 260661560705804.

It is not an unprimeable number, because it can be changed into a prime (260661560705863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22240741641 + ... + 22240753360.

It is an arithmetic number, because the mean of its divisors is an integer number (22885729178529).

Almost surely, 2^{260661560705860} is an apocalyptic number.

260661560705860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260661560705860 is an abundant number, since it is smaller than the sum of its proper divisors (288595939578836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

260661560705860 is a wasteful number, since it uses less digits than its factorization.

260661560705860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44481495303 (or 44481495301 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 58.

The spelling of 260661560705860 in words is "two hundred sixty trillion, six hundred sixty-one billion, five hundred sixty million, seven hundred five thousand, eight hundred sixty".