51206263644671 has 2 divisors, whose sum is σ = 51206263644672. Its totient is φ = 51206263644670.

The previous prime is 51206263644623. The next prime is 51206263644737. The reversal of 51206263644671 is 17644636260215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51206263644671 - 2⁴² = 46808217133567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51206263644971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25603131822335 + 25603131822336.

It is an arithmetic number, because the mean of its divisors is an integer number (25603131822336).

Almost surely, 2^{51206263644671} is an apocalyptic number.

51206263644671 is a deficient number, since it is larger than the sum of its proper divisors (1).

51206263644671 is an equidigital number, since it uses as much as digits as its factorization.

51206263644671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8709120, while the sum is 53.

The spelling of 51206263644671 in words is "fifty-one trillion, two hundred six billion, two hundred sixty-three million, six hundred forty-four thousand, six hundred seventy-one".