8157415447685 has 8 divisors (see below), whose sum is σ = 11187312614016. Its totient is φ = 5593656306960.

The previous prime is 8157415447663. The next prime is 8157415447693. The reversal of 8157415447685 is 5867445147518.

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

It is not a de Polignac number, because 8157415447685 - 2⁴⁰ = 7057903819909 is a prime.

It is a super-2 number, since 2×8157415447685² (a number of 27 digits) contains 22 as substring.

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, 116534506361 + ... + 116534506430.

It is an arithmetic number, because the mean of its divisors is an integer number (1398414076752).

Almost surely, 2^{8157415447685} is an apocalyptic number.

It is an amenable number.

8157415447685 is a deficient number, since it is larger than the sum of its proper divisors (3029897166331).

8157415447685 is a wasteful number, since it uses less digits than its factorization.

8157415447685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233069012803.

The product of its digits is 150528000, while the sum is 65.

The spelling of 8157415447685 in words is "eight trillion, one hundred fifty-seven billion, four hundred fifteen million, four hundred forty-seven thousand, six hundred eighty-five".