51387201523338 has 64 divisors (see below), whose sum is σ = 108917106278400. Its totient is φ = 16134200087040.

The previous prime is 51387201523279. The next prime is 51387201523369. The reversal of 51387201523338 is 83332510278315.

51387201523338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145921320 + ... + 146273052.

It is an arithmetic number, because the mean of its divisors is an integer number (1701829785600).

Almost surely, 2^{51387201523338} is an apocalyptic number.

51387201523338 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

51387201523338 is an abundant number, since it is smaller than the sum of its proper divisors (57529904755062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51387201523338 is a wasteful number, since it uses less digits than its factorization.

51387201523338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372287.

The product of its (nonzero) digits is 3628800, while the sum is 51.

The spelling of 51387201523338 in words is "fifty-one trillion, three hundred eighty-seven billion, two hundred one million, five hundred twenty-three thousand, three hundred thirty-eight".