30000000000015 has 48 divisors (see below), whose sum is σ = 53231981582208. Its totient is φ = 15621245938368.

The previous prime is 30000000000013. The next prime is 30000000000017. The reversal of 30000000000015 is 51000000000003.

It is an interprime number because it is at equal distance from previous prime (30000000000013) and next prime (30000000000017).

It is not a de Polignac number, because 30000000000015 - 2¹ = 30000000000013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 29999999999898, 29999999999907 and 30000000000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30000000000011) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1238532 + ... + 7844358.

It is an arithmetic number, because the mean of its divisors is an integer number (1108999616296).

Almost surely, 2^{30000000000015} is an apocalyptic number.

30000000000015 is a deficient number, since it is larger than the sum of its proper divisors (23231981582193).

30000000000015 is a wasteful number, since it uses less digits than its factorization.

30000000000015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6608228 (or 6608225 counting only the distinct ones).

The product of its (nonzero) digits is 15, while the sum is 9.

Adding to 30000000000015 its reverse (51000000000003), we get a palindrome (81000000000018).

The spelling of 30000000000015 in words is "thirty trillion, fifteen", and thus it is an aban number and an uban number.