51939332228 has 36 divisors (see below), whose sum is σ = 110330764992. Its totient is φ = 21291898320.

The previous prime is 51939332227. The next prime is 51939332231. The reversal of 51939332228 is 82223393915.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51939332227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5756288 + ... + 5765303.

It is an arithmetic number, because the mean of its divisors is an integer number (3064743472).

Almost surely, 2^51939332228 is an apocalyptic number.

It is an amenable number.

51939332228 is an abundant number, since it is smaller than the sum of its proper divisors (58391432764).

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

51939332228 is a wasteful number, since it uses less digits than its factorization.

51939332228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11521632 (or 11521623 counting only the distinct ones).

The product of its digits is 699840, while the sum is 47.

The spelling of 51939332228 in words is "fifty-one billion, nine hundred thirty-nine million, three hundred thirty-two thousand, two hundred twenty-eight".