12051575015 has 4 divisors (see below), whose sum is σ = 14461890024. Its totient is φ = 9641260008.

The previous prime is 12051574943. The next prime is 12051575023. The reversal of 12051575015 is 51057515021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12051575015 is a prime.

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, 1205157497 + ... + 1205157506.

It is an arithmetic number, because the mean of its divisors is an integer number (3615472506).

Almost surely, 2^12051575015 is an apocalyptic number.

12051575015 is a deficient number, since it is larger than the sum of its proper divisors (2410315009).

12051575015 is an equidigital number, since it uses as much as digits as its factorization.

12051575015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410315008.

The product of its (nonzero) digits is 8750, while the sum is 32.

The spelling of 12051575015 in words is "twelve billion, fifty-one million, five hundred seventy-five thousand, fifteen".