8145394157015 has 8 divisors (see below), whose sum is σ = 9940142022480. Its totient is φ = 6405869302912.

The previous prime is 8145394157009. The next prime is 8145394157051. The reversal of 8145394157015 is 5107514935418.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8145394157015 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13805752514 + ... + 13805753103.

It is an arithmetic number, because the mean of its divisors is an integer number (1242517752810).

Almost surely, 2^{8145394157015} is an apocalyptic number.

8145394157015 is a deficient number, since it is larger than the sum of its proper divisors (1794747865465).

8145394157015 is a wasteful number, since it uses less digits than its factorization.

8145394157015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27611505681.

The product of its (nonzero) digits is 3024000, while the sum is 53.

The spelling of 8145394157015 in words is "eight trillion, one hundred forty-five billion, three hundred ninety-four million, one hundred fifty-seven thousand, fifteen".