260437721547860 has 12 divisors (see below), whose sum is σ = 546919215250548. Its totient is φ = 104175088619136.

The previous prime is 260437721547791. The next prime is 260437721547863. The reversal of 260437721547860 is 68745127734062.

It can be written as a sum of positive squares in 2 ways, for example, as 145410509242384 + 115027212305476 = 12058628^2 + 10725074^2 .

It is a junction number, because it is equal to n+sod(n) for n = 260437721547793 and 260437721547802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260437721547863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6510943038677 + ... + 6510943038716.

It is an arithmetic number, because the mean of its divisors is an integer number (45576601270879).

Almost surely, 2^{260437721547860} is an apocalyptic number.

260437721547860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260437721547860 is an abundant number, since it is smaller than the sum of its proper divisors (286481493702688).

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

260437721547860 is a wasteful number, since it uses less digits than its factorization.

260437721547860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13021886077402 (or 13021886077400 counting only the distinct ones).

The product of its (nonzero) digits is 94832640, while the sum is 62.

The spelling of 260437721547860 in words is "two hundred sixty trillion, four hundred thirty-seven billion, seven hundred twenty-one million, five hundred forty-seven thousand, eight hundred sixty".