12157015245 has 8 divisors (see below), whose sum is σ = 19451224416. Its totient is φ = 6483741456.

The previous prime is 12157015243. The next prime is 12157015249. The reversal of 12157015245 is 54251075121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12157015245 - 2¹ = 12157015243 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12157015243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405233827 + ... + 405233856.

It is an arithmetic number, because the mean of its divisors is an integer number (2431403052).

Almost surely, 2^12157015245 is an apocalyptic number.

12157015245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12157015245 is a deficient number, since it is larger than the sum of its proper divisors (7294209171).

12157015245 is an equidigital number, since it uses as much as digits as its factorization.

12157015245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810467691.

The product of its (nonzero) digits is 14000, while the sum is 33.

The spelling of 12157015245 in words is "twelve billion, one hundred fifty-seven million, fifteen thousand, two hundred forty-five".