51634344646 has 8 divisors (see below), whose sum is σ = 77619525984. Its totient is φ = 25761169320.

The previous prime is 51634344611. The next prime is 51634344677. The reversal of 51634344646 is 64644343615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51634344646² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51634344596 and 51634344605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28000350 + ... + 28002193.

It is an arithmetic number, because the mean of its divisors is an integer number (9702440748).

Almost surely, 2^51634344646 is an apocalyptic number.

51634344646 is a deficient number, since it is larger than the sum of its proper divisors (25985181338).

51634344646 is a wasteful number, since it uses less digits than its factorization.

51634344646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56003006.

The product of its digits is 2488320, while the sum is 46.

The spelling of 51634344646 in words is "fifty-one billion, six hundred thirty-four million, three hundred forty-four thousand, six hundred forty-six".