247380811728 has 20 divisors (see below), whose sum is σ = 639067097088. Its totient is φ = 82460270560.

The previous prime is 247380811687. The next prime is 247380811757. The reversal of 247380811728 is 827118083742.

It is a super-2 number, since 2×247380811728² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

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, 2576883408 + ... + 2576883503.

Almost surely, 2^247380811728 is an apocalyptic number.

It is an amenable number.

247380811728 is an abundant number, since it is smaller than the sum of its proper divisors (391686285360).

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

247380811728 is a wasteful number, since it uses less digits than its factorization.

247380811728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5153766922 (or 5153766916 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 51.

The spelling of 247380811728 in words is "two hundred forty-seven billion, three hundred eighty million, eight hundred eleven thousand, seven hundred twenty-eight".