51634836289 has 3 divisors (see below), whose sum is σ = 51635063523. Its totient is φ = 51634609056.

The previous prime is 51634836271. The next prime is 51634836391. The reversal of 51634836289 is 98263843615.

The square root of 51634836289 is 227233.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1902268225 + 49732568064 = 43615^2 + 223008^2 .

It is not a de Polignac number, because 51634836289 - 2⁵ = 51634836257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51634836089) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 113617 + ... + 340849.

It is an arithmetic number, because the mean of its divisors is an integer number (17211687841).

Almost surely, 2^51634836289 is an apocalyptic number.

51634836289 is the 227233-rd square number.

51634836289 is the 113617-th centered octagonal number.

It is an amenable number.

51634836289 is a deficient number, since it is larger than the sum of its proper divisors (227234).

51634836289 is an frugal number, since it uses more digits than its factorization.

51634836289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454466 (or 227233 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 55.

The spelling of 51634836289 in words is "fifty-one billion, six hundred thirty-four million, eight hundred thirty-six thousand, two hundred eighty-nine".