51388348047 has 16 divisors (see below), whose sum is σ = 69049989120. Its totient is φ = 33993035712.

The previous prime is 51388348021. The next prime is 51388348049. The reversal of 51388348047 is 74084388315.

It is a de Polignac number, because none of the positive numbers 2^k-51388348047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51388348049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 892308 + ... + 948150.

It is an arithmetic number, because the mean of its divisors is an integer number (4315624320).

Almost surely, 2^51388348047 is an apocalyptic number.

51388348047 is a deficient number, since it is larger than the sum of its proper divisors (17661641073).

51388348047 is a wasteful number, since it uses less digits than its factorization.

51388348047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58222.

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 51388348047 in words is "fifty-one billion, three hundred eighty-eight million, three hundred forty-eight thousand, forty-seven".