8122768253 has 4 divisors (see below), whose sum is σ = 8402863740. Its totient is φ = 7842672768.

The previous prime is 8122768243. The next prime is 8122768307. The reversal of 8122768253 is 3528672218.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6253330084 + 1869438169 = 79078^2 + 43237^2 .

It is not a de Polignac number, because 8122768253 - 2⁴ = 8122768237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8122768243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140047700 + ... + 140047757.

It is an arithmetic number, because the mean of its divisors is an integer number (2100715935).

Almost surely, 2^8122768253 is an apocalyptic number.

It is an amenable number.

8122768253 is a deficient number, since it is larger than the sum of its proper divisors (280095487).

8122768253 is a wasteful number, since it uses less digits than its factorization.

8122768253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280095486.

The product of its digits is 322560, while the sum is 44.

The square root of 8122768253 is about 90126.4015314048. The cubic root of 8122768253 is about 2010.1787959231.

The spelling of 8122768253 in words is "eight billion, one hundred twenty-two million, seven hundred sixty-eight thousand, two hundred fifty-three".