4278260522065 has 8 divisors (see below), whose sum is σ = 5133924647208. Its totient is φ = 3422600403840.

The previous prime is 4278260522027. The next prime is 4278260522087. The reversal of 4278260522065 is 5602250628724.

It can be written as a sum of positive squares in 4 ways, for example, as 96566805504 + 4181693716561 = 310752^2 + 2044919^2 .

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

It is not a de Polignac number, because 4278260522065 - 2¹⁵ = 4278260489297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2393275 + ... + 3779455.

It is an arithmetic number, because the mean of its divisors is an integer number (641740580901).

Almost surely, 2^{4278260522065} is an apocalyptic number.

It is an amenable number.

4278260522065 is a deficient number, since it is larger than the sum of its proper divisors (855664125143).

4278260522065 is a wasteful number, since it uses less digits than its factorization.

4278260522065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003459.

The product of its (nonzero) digits is 3225600, while the sum is 49.

The spelling of 4278260522065 in words is "four trillion, two hundred seventy-eight billion, two hundred sixty million, five hundred twenty-two thousand, sixty-five".