7161278255 has 4 divisors (see below), whose sum is σ = 8593533912. Its totient is φ = 5729022600.

The previous prime is 7161278233. The next prime is 7161278279. The reversal of 7161278255 is 5528721617.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5528721617 = 29 ⋅190645573.

It is not a de Polignac number, because 7161278255 - 2¹⁸ = 7161016111 is a prime.

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 3 ways as a sum of consecutive naturals, for example, 716127821 + ... + 716127830.

It is an arithmetic number, because the mean of its divisors is an integer number (2148383478).

Almost surely, 2^7161278255 is an apocalyptic number.

7161278255 is a deficient number, since it is larger than the sum of its proper divisors (1432255657).

7161278255 is a wasteful number, since it uses less digits than its factorization.

7161278255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432255656.

The product of its digits is 235200, while the sum is 44.

The square root of 7161278255 is about 84624.3360682966. The cubic root of 7161278255 is about 1927.5109308238.

The spelling of 7161278255 in words is "seven billion, one hundred sixty-one million, two hundred seventy-eight thousand, two hundred fifty-five".