51638646230 has 8 divisors (see below), whose sum is σ = 92949563232. Its totient is φ = 20655458488.

The previous prime is 51638646181. The next prime is 51638646263. The reversal of 51638646230 is 3264683615.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2581932302 + ... + 2581932321.

It is an arithmetic number, because the mean of its divisors is an integer number (11618695404).

Almost surely, 2^51638646230 is an apocalyptic number.

51638646230 is a deficient number, since it is larger than the sum of its proper divisors (41310917002).

51638646230 is a wasteful number, since it uses less digits than its factorization.

51638646230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5163864630.

The product of its (nonzero) digits is 622080, while the sum is 44.

The spelling of 51638646230 in words is "fifty-one billion, six hundred thirty-eight million, six hundred forty-six thousand, two hundred thirty".