51634255243663 has 2 divisors, whose sum is σ = 51634255243664. Its totient is φ = 51634255243662.

The previous prime is 51634255243657. The next prime is 51634255243687. The reversal of 51634255243663 is 36634255243615.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51634255243663 - 2⁵ = 51634255243631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51634255243603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25817127621831 + 25817127621832.

It is an arithmetic number, because the mean of its divisors is an integer number (25817127621832).

Almost surely, 2^{51634255243663} is an apocalyptic number.

51634255243663 is a deficient number, since it is larger than the sum of its proper divisors (1).

51634255243663 is an equidigital number, since it uses as much as digits as its factorization.

51634255243663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656000, while the sum is 55.

The spelling of 51634255243663 in words is "fifty-one trillion, six hundred thirty-four billion, two hundred fifty-five million, two hundred forty-three thousand, six hundred sixty-three".