30671878085 has 4 divisors (see below), whose sum is σ = 36806253708. Its totient is φ = 24537502464.

The previous prime is 30671878073. The next prime is 30671878151. The reversal of 30671878085 is 58087817603.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5542653601 + 25129224484 = 74449^2 + 158522^2 .

It is a cyclic number.

It is not a de Polignac number, because 30671878085 - 2⁸ = 30671877829 is a prime.

It is a super-2 number, since 2×30671878085² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

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, 3067187804 + ... + 3067187813.

It is an arithmetic number, because the mean of its divisors is an integer number (9201563427).

Almost surely, 2^30671878085 is an apocalyptic number.

It is an amenable number.

30671878085 is a deficient number, since it is larger than the sum of its proper divisors (6134375623).

30671878085 is an equidigital number, since it uses as much as digits as its factorization.

30671878085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6134375622.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 30671878085 in words is "thirty billion, six hundred seventy-one million, eight hundred seventy-eight thousand, eighty-five".