260489409840 has 1440 divisors, whose sum is σ = 1063483057728. Its totient is φ = 59122483200.

The previous prime is 260489409823. The next prime is 260489409863. The reversal of 260489409840 is 48904984062.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 3568348044 + ... + 3568348116.

Almost surely, 2^260489409840 is an apocalyptic number.

260489409840 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 260489409840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (531741528864).

260489409840 is an abundant number, since it is smaller than the sum of its proper divisors (802993647888).

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

260489409840 is a wasteful number, since it uses less digits than its factorization.

260489409840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The spelling of 260489409840 in words is "two hundred sixty billion, four hundred eighty-nine million, four hundred nine thousand, eight hundred forty".