51360229680 has 80 divisors (see below), whose sum is σ = 159272826720. Its totient is φ = 13691234304.

The previous prime is 51360229673. The next prime is 51360229703. The reversal of 51360229680 is 8692206315.

It is a tau number, because it is divible by the number of its divisors (80).

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, 672486 + ... + 744954.

It is an arithmetic number, because the mean of its divisors is an integer number (1990910334).

Almost surely, 2^51360229680 is an apocalyptic number.

It is an amenable number.

51360229680 is an abundant number, since it is smaller than the sum of its proper divisors (107912597040).

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

51360229680 is a wasteful number, since it uses less digits than its factorization.

51360229680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75438 (or 75432 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 51360229680 in words is "fifty-one billion, three hundred sixty million, two hundred twenty-nine thousand, six hundred eighty".