51969551928 has 64 divisors (see below), whose sum is σ = 154940290560. Its totient is φ = 14202857856.

The previous prime is 51969551903. The next prime is 51969551957. The reversal of 51969551928 is 82915596915.

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, 6720975 + ... + 6728702.

It is an arithmetic number, because the mean of its divisors is an integer number (2420942040).

Almost surely, 2^51969551928 is an apocalyptic number.

It is an amenable number.

51969551928 is an abundant number, since it is smaller than the sum of its proper divisors (102970738632).

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

51969551928 is a wasteful number, since it uses less digits than its factorization.

51969551928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13449716 (or 13449712 counting only the distinct ones).

The product of its digits is 8748000, while the sum is 60.

The spelling of 51969551928 in words is "fifty-one billion, nine hundred sixty-nine million, five hundred fifty-one thousand, nine hundred twenty-eight".