51558694222 has 32 divisors (see below), whose sum is σ = 93670395840. Its totient is φ = 20777925120.

The previous prime is 51558694133. The next prime is 51558694247. The reversal of 51558694222 is 22249685515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166272 + ... + 361612.

It is an arithmetic number, because the mean of its divisors is an integer number (2927199870).

Almost surely, 2^51558694222 is an apocalyptic number.

51558694222 is a deficient number, since it is larger than the sum of its proper divisors (42111701618).

51558694222 is a wasteful number, since it uses less digits than its factorization.

51558694222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196476.

The product of its digits is 1728000, while the sum is 49.

The spelling of 51558694222 in words is "fifty-one billion, five hundred fifty-eight million, six hundred ninety-four thousand, two hundred twenty-two".