51113798573 has 2 divisors, whose sum is σ = 51113798574. Its totient is φ = 51113798572.

The previous prime is 51113798551. The next prime is 51113798653. The reversal of 51113798573 is 37589731115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51038490889 + 75307684 = 225917^2 + 8678^2 .

It is a cyclic number.

It is not a de Polignac number, because 51113798573 - 2²⁶ = 51046689709 is a prime.

It is a super-2 number, since 2×51113798573² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51113798543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25556899286 + 25556899287.

It is an arithmetic number, because the mean of its divisors is an integer number (25556899287).

Almost surely, 2^51113798573 is an apocalyptic number.

It is an amenable number.

51113798573 is a deficient number, since it is larger than the sum of its proper divisors (1).

51113798573 is an equidigital number, since it uses as much as digits as its factorization.

51113798573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 793800, while the sum is 50.

The spelling of 51113798573 in words is "fifty-one billion, one hundred thirteen million, seven hundred ninety-eight thousand, five hundred seventy-three".