12030532515 has 12 divisors (see below), whose sum is σ = 20852923104. Its totient is φ = 6416283984.

The previous prime is 12030532453. The next prime is 12030532517. The reversal of 12030532515 is 51523503021.

It is a happy number.

12030532515 is a `hidden beast` number, since 1 + 20 + 305 + 325 + 15 = 666.

It is not a de Polignac number, because 12030532515 - 2⁷ = 12030532387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12030532517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133672539 + ... + 133672628.

It is an arithmetic number, because the mean of its divisors is an integer number (1737743592).

Almost surely, 2^12030532515 is an apocalyptic number.

12030532515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12030532515 is a deficient number, since it is larger than the sum of its proper divisors (8822390589).

12030532515 is a wasteful number, since it uses less digits than its factorization.

12030532515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267345178 (or 267345175 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The spelling of 12030532515 in words is "twelve billion, thirty million, five hundred thirty-two thousand, five hundred fifteen".