12151718057245 has 8 divisors (see below), whose sum is σ = 15703758720216. Its totient is φ = 8973576411456.

The previous prime is 12151718057153. The next prime is 12151718057249. The reversal of 12151718057245 is 54275081715121.

12151718057245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1255737636409 + 10895980420836 = 1120597^2 + 3300906^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12151718057245 - 2³¹ = 12149570573597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12151718057249) 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, 93474754222 + ... + 93474754351.

It is an arithmetic number, because the mean of its divisors is an integer number (1962969840027).

Almost surely, 2^{12151718057245} is an apocalyptic number.

It is an amenable number.

12151718057245 is a deficient number, since it is larger than the sum of its proper divisors (3552040662971).

12151718057245 is a wasteful number, since it uses less digits than its factorization.

12151718057245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186949508591.

The product of its (nonzero) digits is 784000, while the sum is 49.

The spelling of 12151718057245 in words is "twelve trillion, one hundred fifty-one billion, seven hundred eighteen million, fifty-seven thousand, two hundred forty-five".