51605145500163 has 8 divisors (see below), whose sum is σ = 68833540344000. Its totient is φ = 34390090494888.

The previous prime is 51605145500137. The next prime is 51605145500221. The reversal of 51605145500163 is 36100554150615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51605145500163 - 2¹⁴ = 51605145483779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51605145500563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3334950613 + ... + 3334966086.

It is an arithmetic number, because the mean of its divisors is an integer number (8604192543000).

Almost surely, 2^{51605145500163} is an apocalyptic number.

51605145500163 is a deficient number, since it is larger than the sum of its proper divisors (17228394843837).

51605145500163 is a wasteful number, since it uses less digits than its factorization.

51605145500163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6669919281.

The product of its (nonzero) digits is 270000, while the sum is 42.

Adding to 51605145500163 its reverse (36100554150615), we get a palindrome (87705699650778).

The spelling of 51605145500163 in words is "fifty-one trillion, six hundred five billion, one hundred forty-five million, five hundred thousand, one hundred sixty-three".