51817814822 has 16 divisors (see below), whose sum is σ = 79630502112. Its totient is φ = 25274441280.

The previous prime is 51817814819. The next prime is 51817814837. The reversal of 51817814822 is 22841871815.

It is a happy number.

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, 986528 + ... + 1037724.

It is an arithmetic number, because the mean of its divisors is an integer number (4976906382).

Almost surely, 2^51817814822 is an apocalyptic number.

51817814822 is a deficient number, since it is larger than the sum of its proper divisors (27812687290).

51817814822 is a wasteful number, since it uses less digits than its factorization.

51817814822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63583.

The product of its digits is 286720, while the sum is 47.

The spelling of 51817814822 in words is "fifty-one billion, eight hundred seventeen million, eight hundred fourteen thousand, eight hundred twenty-two".