51634344677 has 2 divisors, whose sum is σ = 51634344678. Its totient is φ = 51634344676.

The previous prime is 51634344611. The next prime is 51634344703. The reversal of 51634344677 is 77644343615.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51633927361 + 417316 = 227231^2 + 646^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51634344677 is a prime.

It is a super-2 number, since 2×51634344677² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51634344277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25817172338 + 25817172339.

It is an arithmetic number, because the mean of its divisors is an integer number (25817172339).

Almost surely, 2^51634344677 is an apocalyptic number.

It is an amenable number.

51634344677 is a deficient number, since it is larger than the sum of its proper divisors (1).

51634344677 is an equidigital number, since it uses as much as digits as its factorization.

51634344677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5080320, while the sum is 50.

The spelling of 51634344677 in words is "fifty-one billion, six hundred thirty-four million, three hundred forty-four thousand, six hundred seventy-seven".