51819206886 has 24 divisors (see below), whose sum is σ = 112295550744. Its totient is φ = 17269899360.

The previous prime is 51819206869. The next prime is 51819206891. The reversal of 51819206886 is 68860291815.

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 11 ways as a sum of consecutive naturals, for example, 162255 + ... + 360506.

It is an arithmetic number, because the mean of its divisors is an integer number (4678981281).

Almost surely, 2^51819206886 is an apocalyptic number.

51819206886 is an abundant number, since it is smaller than the sum of its proper divisors (60476343858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51819206886 is a wasteful number, since it uses less digits than its factorization.

51819206886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528276 (or 528273 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 54.

The spelling of 51819206886 in words is "fifty-one billion, eight hundred nineteen million, two hundred six thousand, eight hundred eighty-six".