51113280929 has 2 divisors, whose sum is σ = 51113280930. Its totient is φ = 51113280928.

The previous prime is 51113280919. The next prime is 51113281001. The reversal of 51113280929 is 92908231115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39994000225 + 11119280704 = 199985^2 + 105448^2 .

It is a cyclic number.

It is not a de Polignac number, because 51113280929 - 2²⁸ = 50844845473 is a prime.

It is a super-2 number, since 2×51113280929² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (51113280919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25556640464 + 25556640465.

It is an arithmetic number, because the mean of its divisors is an integer number (25556640465).

Almost surely, 2^51113280929 is an apocalyptic number.

It is an amenable number.

51113280929 is a deficient number, since it is larger than the sum of its proper divisors (1).

51113280929 is an equidigital number, since it uses as much as digits as its factorization.

51113280929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 41.

The spelling of 51113280929 in words is "fifty-one billion, one hundred thirteen million, two hundred eighty thousand, nine hundred twenty-nine".