260871691536 has 135 divisors (see below), whose sum is σ = 754938884037. Its totient is φ = 84090867840.

The previous prime is 260871691517. The next prime is 260871691541. The reversal of 260871691536 is 635196178062.

The square root of 260871691536 is 510756.

It is a perfect power (a square), and thus also a powerful number.

260871691536 is a `hidden beast` number, since 2 + 6 + 0 + 8 + 7 + 16 + 91 + 536 = 666.

It can be written as a sum of positive squares in only one way, i.e., 257840528400 + 3031163136 = 507780^2 + 55056^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 190000546 + ... + 190001918.

Almost surely, 2^260871691536 is an apocalyptic number.

260871691536 is the 510756-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 260871691536

260871691536 is an abundant number, since it is smaller than the sum of its proper divisors (494067192501).

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

260871691536 is an equidigital number, since it uses as much as digits as its factorization.

260871691536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2822 (or 1409 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 260871691536 in words is "two hundred sixty billion, eight hundred seventy-one million, six hundred ninety-one thousand, five hundred thirty-six".