51380728274724 has 12 divisors (see below), whose sum is σ = 119888365974384. Its totient is φ = 17126909424904.

The previous prime is 51380728274683. The next prime is 51380728274791. The reversal of 51380728274724 is 42747282708315.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2140863678102 + ... + 2140863678125.

It is an arithmetic number, because the mean of its divisors is an integer number (9990697164532).

Almost surely, 2^{51380728274724} is an apocalyptic number.

It is an amenable number.

51380728274724 is an abundant number, since it is smaller than the sum of its proper divisors (68507637699660).

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

51380728274724 is a wasteful number, since it uses less digits than its factorization.

51380728274724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4281727356234 (or 4281727356232 counting only the distinct ones).

The product of its (nonzero) digits is 42147840, while the sum is 60.

The spelling of 51380728274724 in words is "fifty-one trillion, three hundred eighty billion, seven hundred twenty-eight million, two hundred seventy-four thousand, seven hundred twenty-four".