30385788085 has 4 divisors (see below), whose sum is σ = 36462945708. Its totient is φ = 24308630464.

The previous prime is 30385788079. The next prime is 30385788101. The reversal of 30385788085 is 58088758303.

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 9881552836 + 20504235249 = 99406^2 + 143193^2 .

It is a cyclic number.

It is not a de Polignac number, because 30385788085 - 2²¹ = 30383690933 is a prime.

It is a super-2 number, since 2×30385788085² (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, 3038578804 + ... + 3038578813.

It is an arithmetic number, because the mean of its divisors is an integer number (9115736427).

Almost surely, 2^30385788085 is an apocalyptic number.

It is an amenable number.

30385788085 is a deficient number, since it is larger than the sum of its proper divisors (6077157623).

30385788085 is an equidigital number, since it uses as much as digits as its factorization.

30385788085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6077157622.

The product of its (nonzero) digits is 6451200, while the sum is 55.

The spelling of 30385788085 in words is "thirty billion, three hundred eighty-five million, seven hundred eighty-eight thousand, eighty-five".