260366320640 has 352 divisors, whose sum is σ = 699732069120. Its totient is φ = 92380594176.

The previous prime is 260366320597. The next prime is 260366320723. The reversal of 260366320640 is 46023663062.

It is a super-2 number, since 2×260366320640² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 260366320594 and 260366320603.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 517626629 + ... + 517627131.

Almost surely, 2^260366320640 is an apocalyptic number.

260366320640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 260366320640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (349866034560).

260366320640 is an abundant number, since it is smaller than the sum of its proper divisors (439365748480).

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

260366320640 is a wasteful number, since it uses less digits than its factorization.

260366320640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877 (or 859 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 38.

The spelling of 260366320640 in words is "two hundred sixty billion, three hundred sixty-six million, three hundred twenty thousand, six hundred forty".