51355306523638 has 16 divisors (see below), whose sum is σ = 82967400668880. Its totient is φ = 23699926709856.

The previous prime is 51355306523627. The next prime is 51355306523641. The reversal of 51355306523638 is 83632560355315.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104853268 + ... + 105341911.

It is an arithmetic number, because the mean of its divisors is an integer number (5185462541805).

Almost surely, 2^{51355306523638} is an apocalyptic number.

51355306523638 is a deficient number, since it is larger than the sum of its proper divisors (31612094145242).

51355306523638 is a wasteful number, since it uses less digits than its factorization.

51355306523638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210204591.

The product of its (nonzero) digits is 29160000, while the sum is 55.

The spelling of 51355306523638 in words is "fifty-one trillion, three hundred fifty-five billion, three hundred six million, five hundred twenty-three thousand, six hundred thirty-eight".