30825778033 has 4 divisors (see below), whose sum is σ = 30961574640. Its totient is φ = 30689981428.

The previous prime is 30825778021. The next prime is 30825778063. The reversal of 30825778033 is 33087752803.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33087752803 = 7 ⋅4726821829.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30825778033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30825778063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67897963 + ... + 67898416.

It is an arithmetic number, because the mean of its divisors is an integer number (7740393660).

Almost surely, 2^30825778033 is an apocalyptic number.

It is an amenable number.

30825778033 is a deficient number, since it is larger than the sum of its proper divisors (135796607).

30825778033 is a wasteful number, since it uses less digits than its factorization.

30825778033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135796606.

The product of its (nonzero) digits is 846720, while the sum is 46.

The spelling of 30825778033 in words is "thirty billion, eight hundred twenty-five million, seven hundred seventy-eight thousand, thirty-three".