855748393728 has 72 divisors (see below), whose sum is σ = 2308738005168. Its totient is φ = 281341919232.

The previous prime is 855748393609. The next prime is 855748393741. The reversal of 855748393728 is 827393847558.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7575825 + ... + 7687952.

Almost surely, 2^855748393728 is an apocalyptic number.

It is an amenable number.

855748393728 is an abundant number, since it is smaller than the sum of its proper divisors (1452989611440).

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

855748393728 is a wasteful number, since it uses less digits than its factorization.

855748393728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15263869 (or 15263855 counting only the distinct ones).

The product of its digits is 406425600, while the sum is 69.

The spelling of 855748393728 in words is "eight hundred fifty-five billion, seven hundred forty-eight million, three hundred ninety-three thousand, seven hundred twenty-eight".