51122463265 has 4 divisors (see below), whose sum is σ = 61346955924. Its totient is φ = 40897970608.

The previous prime is 51122463253. The next prime is 51122463349. The reversal of 51122463265 is 56236422115.

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 35589577104 + 15532886161 = 188652^2 + 124631^2 .

It is a cyclic number.

It is not a de Polignac number, because 51122463265 - 2⁷ = 51122463137 is a prime.

It is a super-2 number, since 2×51122463265² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5112246322 + ... + 5112246331.

It is an arithmetic number, because the mean of its divisors is an integer number (15336738981).

Almost surely, 2^51122463265 is an apocalyptic number.

It is an amenable number.

51122463265 is a deficient number, since it is larger than the sum of its proper divisors (10224492659).

51122463265 is a wasteful number, since it uses less digits than its factorization.

51122463265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10224492658.

The product of its digits is 86400, while the sum is 37.

The spelling of 51122463265 in words is "fifty-one billion, one hundred twenty-two million, four hundred sixty-three thousand, two hundred sixty-five".