51517227782 has 12 divisors (see below), whose sum is σ = 77837500860. Its totient is φ = 25571421528.

The previous prime is 51517227757. The next prime is 51517227841. The reversal of 51517227782 is 28772271515.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 3777608 + ... + 3791220.

It is an arithmetic number, because the mean of its divisors is an integer number (6486458405).

Almost surely, 2^51517227782 is an apocalyptic number.

51517227782 is a deficient number, since it is larger than the sum of its proper divisors (26320273078).

51517227782 is an frugal number, since it uses more digits than its factorization.

51517227782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27367 (or 13754 counting only the distinct ones).

The product of its digits is 548800, while the sum is 47.

The spelling of 51517227782 in words is "fifty-one billion, five hundred seventeen million, two hundred twenty-seven thousand, seven hundred eighty-two".