51079622017 has 4 divisors (see below), whose sum is σ = 51088357936. Its totient is φ = 51070886100.

The previous prime is 51079621997. The next prime is 51079622029. The reversal of 51079622017 is 71022697015.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51079622017 - 2⁷ = 51079621889 is a prime.

It is a super-2 number, since 2×51079622017² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51079622057) by changing a digit.

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, 4359183 + ... + 4370884.

It is an arithmetic number, because the mean of its divisors is an integer number (12772089484).

Almost surely, 2^51079622017 is an apocalyptic number.

It is an amenable number.

51079622017 is a deficient number, since it is larger than the sum of its proper divisors (8735919).

51079622017 is an equidigital number, since it uses as much as digits as its factorization.

51079622017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8735918.

The product of its (nonzero) digits is 52920, while the sum is 40.

The spelling of 51079622017 in words is "fifty-one billion, seventy-nine million, six hundred twenty-two thousand, seventeen".