51371661110 has 128 divisors (see below), whose sum is σ = 120322713600. Its totient is φ = 15322245120.

The previous prime is 51371661053. The next prime is 51371661199. The reversal of 51371661110 is 1116617315.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2513111 + ... + 2533469.

It is an arithmetic number, because the mean of its divisors is an integer number (940021200).

Almost surely, 2^51371661110 is an apocalyptic number.

51371661110 is an abundant number, since it is smaller than the sum of its proper divisors (68951052490).

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

51371661110 is a wasteful number, since it uses less digits than its factorization.

51371661110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20526.

The product of its (nonzero) digits is 3780, while the sum is 32.

The spelling of 51371661110 in words is "fifty-one billion, three hundred seventy-one million, six hundred sixty-one thousand, one hundred ten".