51338746949 has 8 divisors (see below), whose sum is σ = 58729332480. Its totient is φ = 43962281136.

The previous prime is 51338746939. The next prime is 51338746997. The reversal of 51338746949 is 94964783315.

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 51338746949 - 2¹² = 51338742853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51338746939) 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 7 ways as a sum of consecutive naturals, for example, 3522134 + ... + 3536679.

It is an arithmetic number, because the mean of its divisors is an integer number (7341166560).

Almost surely, 2^51338746949 is an apocalyptic number.

It is an amenable number.

51338746949 is a deficient number, since it is larger than the sum of its proper divisors (7390585531).

51338746949 is a wasteful number, since it uses less digits than its factorization.

51338746949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7059859.

The product of its digits is 19595520, while the sum is 59.

The spelling of 51338746949 in words is "fifty-one billion, three hundred thirty-eight million, seven hundred forty-six thousand, nine hundred forty-nine".