51387705382 has 16 divisors (see below), whose sum is σ = 83018722752. Its totient is φ = 23715169920.

The previous prime is 51387705319. The next prime is 51387705407. The reversal of 51387705382 is 28350778315.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206718 + ... + 381454.

It is an arithmetic number, because the mean of its divisors is an integer number (5188670172).

Almost surely, 2^51387705382 is an apocalyptic number.

51387705382 is a deficient number, since it is larger than the sum of its proper divisors (31631017370).

51387705382 is a wasteful number, since it uses less digits than its factorization.

51387705382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186063.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 51387705382 in words is "fifty-one billion, three hundred eighty-seven million, seven hundred five thousand, three hundred eighty-two".