51469686243 has 24 divisors (see below), whose sum is σ = 76930482720. Its totient is φ = 33120541440.

The previous prime is 51469686211. The next prime is 51469686259. The reversal of 51469686243 is 34268696415.

51469686243 is a `hidden beast` number, since 5 + 1 + 4 + 6 + 9 + 6 + 8 + 624 + 3 = 666.

It is not a de Polignac number, because 51469686243 - 2⁵ = 51469686211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51469686243.

It is not an unprimeable number, because it can be changed into a prime (51469686263) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 963978 + ... + 1015968.

It is an arithmetic number, because the mean of its divisors is an integer number (3205436780).

Almost surely, 2^51469686243 is an apocalyptic number.

51469686243 is a deficient number, since it is larger than the sum of its proper divisors (25460796477).

51469686243 is a wasteful number, since it uses less digits than its factorization.

51469686243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55819 (or 55816 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The spelling of 51469686243 in words is "fifty-one billion, four hundred sixty-nine million, six hundred eighty-six thousand, two hundred forty-three".