51127337861 has 8 divisors (see below), whose sum is σ = 53820325920. Its totient is φ = 48434557392.

The previous prime is 51127337783. The next prime is 51127337867. The reversal of 51127337861 is 16873372115.

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

It is a cyclic number.

It is not a de Polignac number, because 51127337861 - 2¹⁴ = 51127321477 is a prime.

It is a super-2 number, since 2×51127337861² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51127337867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 936431 + ... + 989523.

It is an arithmetic number, because the mean of its divisors is an integer number (6727540740).

Almost surely, 2^51127337861 is an apocalyptic number.

It is an amenable number.

51127337861 is a deficient number, since it is larger than the sum of its proper divisors (2692988059).

51127337861 is a wasteful number, since it uses less digits than its factorization.

51127337861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103795.

The product of its digits is 211680, while the sum is 44.

The spelling of 51127337861 in words is "fifty-one billion, one hundred twenty-seven million, three hundred thirty-seven thousand, eight hundred sixty-one".