51427986108 has 96 divisors (see below), whose sum is σ = 127174634496. Its totient is φ = 16142725632.

The previous prime is 51427986107. The next prime is 51427986119. The reversal of 51427986108 is 80168972415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51427986107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4912816 + ... + 4923272.

It is an arithmetic number, because the mean of its divisors is an integer number (1324735776).

Almost surely, 2^51427986108 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51427986108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63587317248).

51427986108 is an abundant number, since it is smaller than the sum of its proper divisors (75746648388).

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

51427986108 is a wasteful number, since it uses less digits than its factorization.

51427986108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10763 (or 10761 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 51.

The spelling of 51427986108 in words is "fifty-one billion, four hundred twenty-seven million, nine hundred eighty-six thousand, one hundred eight".