51671128105 has 16 divisors (see below), whose sum is σ = 62361812160. Its totient is φ = 41099752512.

The previous prime is 51671128043. The next prime is 51671128109. The reversal of 51671128105 is 50182117615.

It is a cyclic number.

It is not a de Polignac number, because 51671128105 - 2⁹ = 51671127593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51671128109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 829126 + ... + 889264.

It is an arithmetic number, because the mean of its divisors is an integer number (3897613260).

Almost surely, 2^51671128105 is an apocalyptic number.

It is an amenable number.

51671128105 is a deficient number, since it is larger than the sum of its proper divisors (10690684055).

51671128105 is a wasteful number, since it uses less digits than its factorization.

51671128105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61128.

The product of its (nonzero) digits is 16800, while the sum is 37.

It can be divided in two parts, 51671 and 128105, that added together give a square (179776 = 424²).

The spelling of 51671128105 in words is "fifty-one billion, six hundred seventy-one million, one hundred twenty-eight thousand, one hundred five".