51846719927 has 4 divisors (see below), whose sum is σ = 54575494680. Its totient is φ = 49117945176.

The previous prime is 51846719923. The next prime is 51846719933. The reversal of 51846719927 is 72991764815.

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 51846719927 - 2² = 51846719923 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 (51846719923) 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 3 ways as a sum of consecutive naturals, for example, 1364387348 + ... + 1364387385.

It is an arithmetic number, because the mean of its divisors is an integer number (13643873670).

Almost surely, 2^51846719927 is an apocalyptic number.

51846719927 is a deficient number, since it is larger than the sum of its proper divisors (2728774753).

51846719927 is a wasteful number, since it uses less digits than its factorization.

51846719927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2728774752.

The product of its digits is 7620480, while the sum is 59.

The spelling of 51846719927 in words is "fifty-one billion, eight hundred forty-six million, seven hundred nineteen thousand, nine hundred twenty-seven".