51152120503728 has 80 divisors (see below), whose sum is σ = 136193967361536. Its totient is φ = 16531255284480.

The previous prime is 51152120503669. The next prime is 51152120503763. The reversal of 51152120503728 is 82730502125115.

It is a self number, because there is not a number n which added to its sum of digits gives 51152120503728.

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, 50384088 + ... + 51389303.

Almost surely, 2^{51152120503728} is an apocalyptic number.

It is an amenable number.

51152120503728 is an abundant number, since it is smaller than the sum of its proper divisors (85041846857808).

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

51152120503728 is a wasteful number, since it uses less digits than its factorization.

51152120503728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101773722 (or 101773716 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 42.

The spelling of 51152120503728 in words is "fifty-one trillion, one hundred fifty-two billion, one hundred twenty million, five hundred three thousand, seven hundred twenty-eight".