78257830255 has 16 divisors (see below), whose sum is σ = 104379573024. Its totient is φ = 55840919680.

The previous prime is 78257830229. The next prime is 78257830271. The reversal of 78257830255 is 55203875287.

It is not a de Polignac number, because 78257830255 - 2⁷ = 78257830127 is a prime.

It is a super-2 number, since 2×78257830255² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13420384 + ... + 13426213.

It is an arithmetic number, because the mean of its divisors is an integer number (6523723314).

Almost surely, 2^78257830255 is an apocalyptic number.

78257830255 is a deficient number, since it is larger than the sum of its proper divisors (26121742769).

78257830255 is a wasteful number, since it uses less digits than its factorization.

78257830255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26846666.

The product of its (nonzero) digits is 4704000, while the sum is 52.

The spelling of 78257830255 in words is "seventy-eight billion, two hundred fifty-seven million, eight hundred thirty thousand, two hundred fifty-five".