30149678665 has 16 divisors (see below), whose sum is σ = 36299316240. Its totient is φ = 24040074240.

The previous prime is 30149678651. The next prime is 30149678683. The reversal of 30149678665 is 56687694103.

It can be written as a sum of positive squares in 8 ways, for example, as 102576384 + 30047102281 = 10128^2 + 173341^2 .

It is a de Polignac number, because none of the positive numbers 2^k-30149678665 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1964341 + ... + 1979629.

It is an arithmetic number, because the mean of its divisors is an integer number (2268707265).

Almost surely, 2^30149678665 is an apocalyptic number.

It is an amenable number.

30149678665 is a deficient number, since it is larger than the sum of its proper divisors (6149637575).

30149678665 is a wasteful number, since it uses less digits than its factorization.

30149678665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16572.

The product of its (nonzero) digits is 6531840, while the sum is 55.

The spelling of 30149678665 in words is "thirty billion, one hundred forty-nine million, six hundred seventy-eight thousand, six hundred sixty-five".