51151002073 has 2 divisors, whose sum is σ = 51151002074. Its totient is φ = 51151002072.

The previous prime is 51151002047. The next prime is 51151002173. The reversal of 51151002073 is 37020015115.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45887209369 + 5263792704 = 214213^2 + 72552^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51151002073 is a prime.

It is not a weakly prime, because it can be changed into another prime (51151002173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25575501036 + 25575501037.

It is an arithmetic number, because the mean of its divisors is an integer number (25575501037).

Almost surely, 2^51151002073 is an apocalyptic number.

It is an amenable number.

51151002073 is a deficient number, since it is larger than the sum of its proper divisors (1).

51151002073 is an equidigital number, since it uses as much as digits as its factorization.

51151002073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1050, while the sum is 25.

Adding to 51151002073 its reverse (37020015115), we get a palindrome (88171017188).

The spelling of 51151002073 in words is "fifty-one billion, one hundred fifty-one million, two thousand, seventy-three".