51845161286 has 16 divisors (see below), whose sum is σ = 79498238400. Its totient is φ = 25346802240.

The previous prime is 51845161253. The next prime is 51845161321. The reversal of 51845161286 is 68216154815.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 51845161286.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164285 + ... + 361496.

It is an arithmetic number, because the mean of its divisors is an integer number (4968639900).

Almost surely, 2^51845161286 is an apocalyptic number.

51845161286 is a deficient number, since it is larger than the sum of its proper divisors (27653077114).

51845161286 is a wasteful number, since it uses less digits than its factorization.

51845161286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526879.

The product of its digits is 460800, while the sum is 47.

The spelling of 51845161286 in words is "fifty-one billion, eight hundred forty-five million, one hundred sixty-one thousand, two hundred eighty-six".