51637027064 has 32 divisors (see below), whose sum is σ = 110711424000. Its totient is φ = 22118024160.

The previous prime is 51637026989. The next prime is 51637027069. The reversal of 51637027064 is 46072073615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51637027069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149264 + ... + 354335.

It is an arithmetic number, because the mean of its divisors is an integer number (3459732000).

Almost surely, 2^51637027064 is an apocalyptic number.

It is an amenable number.

51637027064 is an abundant number, since it is smaller than the sum of its proper divisors (59074396936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51637027064 is a wasteful number, since it uses less digits than its factorization.

51637027064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505443 (or 505439 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 41.

The spelling of 51637027064 in words is "fifty-one billion, six hundred thirty-seven million, twenty-seven thousand, sixty-four".