51022078839197 has 2 divisors, whose sum is σ = 51022078839198. Its totient is φ = 51022078839196.

The previous prime is 51022078839187. The next prime is 51022078839209. The reversal of 51022078839197 is 79193887022015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49744611516196 + 1277467323001 = 7052986^2 + 1130251^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51022078839197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51022078839167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25511039419598 + 25511039419599.

It is an arithmetic number, because the mean of its divisors is an integer number (25511039419599).

Almost surely, 2^{51022078839197} is an apocalyptic number.

It is an amenable number.

51022078839197 is a deficient number, since it is larger than the sum of its proper divisors (1).

51022078839197 is an equidigital number, since it uses as much as digits as its factorization.

51022078839197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15240960, while the sum is 62.

The spelling of 51022078839197 in words is "fifty-one trillion, twenty-two billion, seventy-eight million, eight hundred thirty-nine thousand, one hundred ninety-seven".