30785258128 has 20 divisors (see below), whose sum is σ = 59655985840. Its totient is φ = 15390165024.

The previous prime is 30785258107. The next prime is 30785258159. The reversal of 30785258128 is 82185258703.

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, 48750 + ... + 252877.

It is an arithmetic number, because the mean of its divisors is an integer number (2982799292).

Almost surely, 2^30785258128 is an apocalyptic number.

It is an amenable number.

30785258128 is a deficient number, since it is larger than the sum of its proper divisors (28870727712).

30785258128 is a wasteful number, since it uses less digits than its factorization.

30785258128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308014 (or 308008 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 49.

The spelling of 30785258128 in words is "thirty billion, seven hundred eighty-five million, two hundred fifty-eight thousand, one hundred twenty-eight".