51127881847 has 16 divisors (see below), whose sum is σ = 58623989760. Its totient is φ = 43680030048.

The previous prime is 51127881829. The next prime is 51127881859. The reversal of 51127881847 is 74818872115.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 51127881847 - 2¹⁹ = 51127357559 is a prime.

It is a super-2 number, since 2×51127881847² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51127881794 and 51127881803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51127821847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2931888 + ... + 2949274.

It is an arithmetic number, because the mean of its divisors is an integer number (3663999360).

Almost surely, 2^51127881847 is an apocalyptic number.

51127881847 is a deficient number, since it is larger than the sum of its proper divisors (7496107913).

51127881847 is a wasteful number, since it uses less digits than its factorization.

51127881847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18750.

The product of its digits is 1003520, while the sum is 52.

The spelling of 51127881847 in words is "fifty-one billion, one hundred twenty-seven million, eight hundred eighty-one thousand, eight hundred forty-seven".