51235393127 has 4 divisors (see below), whose sum is σ = 52888147776. Its totient is φ = 49582638480.

The previous prime is 51235393123. The next prime is 51235393163. The reversal of 51235393127 is 72139353215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51235393127 - 2² = 51235393123 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51235393123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 826377278 + ... + 826377339.

It is an arithmetic number, because the mean of its divisors is an integer number (13222036944).

Almost surely, 2^51235393127 is an apocalyptic number.

51235393127 is a deficient number, since it is larger than the sum of its proper divisors (1652754649).

51235393127 is a wasteful number, since it uses less digits than its factorization.

51235393127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652754648.

The product of its digits is 170100, while the sum is 41.

The spelling of 51235393127 in words is "fifty-one billion, two hundred thirty-five million, three hundred ninety-three thousand, one hundred twenty-seven".