51674382399 has 16 divisors (see below), whose sum is σ = 69600540672. Its totient is φ = 34099218528.

The previous prime is 51674382379. The next prime is 51674382439. The reversal of 51674382399 is 99328347615.

It is a Cunningham number, because it is equal to 227320²-1.

It is not a de Polignac number, because 51674382399 - 2¹⁷ = 51674251327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51674382379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 644077 + ... + 719849.

It is an arithmetic number, because the mean of its divisors is an integer number (4350033792).

Almost surely, 2^51674382399 is an apocalyptic number.

51674382399 is a deficient number, since it is larger than the sum of its proper divisors (17926158273).

51674382399 is a wasteful number, since it uses less digits than its factorization.

51674382399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78086.

The product of its digits is 9797760, while the sum is 57.

The spelling of 51674382399 in words is "fifty-one billion, six hundred seventy-four million, three hundred eighty-two thousand, three hundred ninety-nine".