260783278858 has 8 divisors (see below), whose sum is σ = 414185207652. Its totient is φ = 122721542976.

The previous prime is 260783278843. The next prime is 260783278891. The reversal of 260783278858 is 858872387062.

It can be written as a sum of positive squares in 2 ways, for example, as 260388740089 + 394538769 = 510283^2 + 19863^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 260783278858.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3835048185 + ... + 3835048252.

Almost surely, 2^260783278858 is an apocalyptic number.

260783278858 is a deficient number, since it is larger than the sum of its proper divisors (153401928794).

260783278858 is a wasteful number, since it uses less digits than its factorization.

260783278858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7670096456.

The product of its (nonzero) digits is 72253440, while the sum is 64.

The spelling of 260783278858 in words is "two hundred sixty billion, seven hundred eighty-three million, two hundred seventy-eight thousand, eight hundred fifty-eight".