51286090320629 has 2 divisors, whose sum is σ = 51286090320630. Its totient is φ = 51286090320628.

The previous prime is 51286090320623. The next prime is 51286090320637. The reversal of 51286090320629 is 92602309068215.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45004039335025 + 6282050985604 = 6708505^2 + 2506402^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51286090320629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51286090320623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25643045160314 + 25643045160315.

It is an arithmetic number, because the mean of its divisors is an integer number (25643045160315).

Almost surely, 2^{51286090320629} is an apocalyptic number.

It is an amenable number.

51286090320629 is a deficient number, since it is larger than the sum of its proper divisors (1).

51286090320629 is an equidigital number, since it uses as much as digits as its factorization.

51286090320629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 51286090320629 in words is "fifty-one trillion, two hundred eighty-six billion, ninety million, three hundred twenty thousand, six hundred twenty-nine".