51096900163 has 4 divisors (see below), whose sum is σ = 51486952968. Its totient is φ = 50706847360.

The previous prime is 51096900157. The next prime is 51096900181. The reversal of 51096900163 is 36100969015.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51096900163 is a prime.

It is a super-2 number, since 2×51096900163² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51096900103) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 195026206 + ... + 195026467.

It is an arithmetic number, because the mean of its divisors is an integer number (12871738242).

Almost surely, 2^51096900163 is an apocalyptic number.

51096900163 is a deficient number, since it is larger than the sum of its proper divisors (390052805).

51096900163 is a wasteful number, since it uses less digits than its factorization.

51096900163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390052804.

The product of its (nonzero) digits is 43740, while the sum is 40.

The spelling of 51096900163 in words is "fifty-one billion, ninety-six million, nine hundred thousand, one hundred sixty-three".