8197156715 has 16 divisors (see below), whose sum is σ = 10796668416. Its totient is φ = 5924988000.

The previous prime is 8197156663. The next prime is 8197156717. The reversal of 8197156715 is 5176517918.

It is not a de Polignac number, because 8197156715 - 2⁶ = 8197156651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8197156717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 448211 + ... + 466140.

It is an arithmetic number, because the mean of its divisors is an integer number (674791776).

Almost surely, 2^8197156715 is an apocalyptic number.

8197156715 is a deficient number, since it is larger than the sum of its proper divisors (2599511701).

8197156715 is a wasteful number, since it uses less digits than its factorization.

8197156715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914530.

The product of its digits is 529200, while the sum is 50.

The square root of 8197156715 is about 90538.1506051455. The cubic root of 8197156715 is about 2016.2965763809.

The spelling of 8197156715 in words is "eight billion, one hundred ninety-seven million, one hundred fifty-six thousand, seven hundred fifteen".