30785696127975 has 12 divisors (see below), whose sum is σ = 50899017598376. Its totient is φ = 16419037934880.

The previous prime is 30785696127973. The next prime is 30785696128003. The reversal of 30785696127975 is 57972169658703.

It is not a de Polignac number, because 30785696127975 - 2¹ = 30785696127973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (75), and also a Moran number because the ratio is a prime number: 410475948373 = 30785696127975 / (3 + 0 + 7 + 8 + 5 + 6 + 9 + 6 + 1 + 2 + 7 + 9 + 7 + 5).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30785696127897 and 30785696127906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30785696127973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 205237974112 + ... + 205237974261.

Almost surely, 2^{30785696127975} is an apocalyptic number.

30785696127975 is a deficient number, since it is larger than the sum of its proper divisors (20113321470401).

30785696127975 is a wasteful number, since it uses less digits than its factorization.

30785696127975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410475948386 (or 410475948381 counting only the distinct ones).

The product of its (nonzero) digits is 1200225600, while the sum is 75.

The spelling of 30785696127975 in words is "thirty trillion, seven hundred eighty-five billion, six hundred ninety-six million, one hundred twenty-seven thousand, nine hundred seventy-five".