8158070987257 has 8 divisors (see below), whose sum is σ = 8573409612416. Its totient is φ = 7752987636912.

The previous prime is 8158070987207. The next prime is 8158070987263. The reversal of 8158070987257 is 7527890708518.

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-8158070987257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8158070987192 and 8158070987201.

It is not an unprimeable number, because it can be changed into a prime (8158070987207) 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, 2563817073 + ... + 2563820254.

It is an arithmetic number, because the mean of its divisors is an integer number (1071676201552).

Almost surely, 2^{8158070987257} is an apocalyptic number.

It is an amenable number.

8158070987257 is a deficient number, since it is larger than the sum of its proper divisors (415338625159).

8158070987257 is a wasteful number, since it uses less digits than its factorization.

8158070987257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5127637407.

The product of its (nonzero) digits is 79027200, while the sum is 67.

The spelling of 8158070987257 in words is "eight trillion, one hundred fifty-eight billion, seventy million, nine hundred eighty-seven thousand, two hundred fifty-seven".