51127881848 has 16 divisors (see below), whose sum is σ = 97673548680. Its totient is φ = 25081602208.

The previous prime is 51127881829. The next prime is 51127881859. The reversal of 51127881848 is 84818872115.

It is a super-2 number, since 2×51127881848² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a self number, because there is not a number n which added to its sum of digits gives 51127881848.

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, 60291890 + ... + 60292737.

Almost surely, 2^51127881848 is an apocalyptic number.

It is an amenable number.

51127881848 is a deficient number, since it is larger than the sum of its proper divisors (46545666832).

51127881848 is a wasteful number, since it uses less digits than its factorization.

51127881848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120584686 (or 120584682 counting only the distinct ones).

The product of its digits is 1146880, while the sum is 53.

The spelling of 51127881848 in words is "fifty-one billion, one hundred twenty-seven million, eight hundred eighty-one thousand, eight hundred forty-eight".