8116872157 has 2 divisors, whose sum is σ = 8116872158. Its totient is φ = 8116872156.

The previous prime is 8116872149. The next prime is 8116872199. The reversal of 8116872157 is 7512786118.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6207706521 + 1909165636 = 78789^2 + 43694^2 .

It is a cyclic number.

It is not a de Polignac number, because 8116872157 - 2³ = 8116872149 is a prime.

It is a super-2 number, since 2×8116872157² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8116872457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4058436078 + 4058436079.

It is an arithmetic number, because the mean of its divisors is an integer number (4058436079).

Almost surely, 2^8116872157 is an apocalyptic number.

It is an amenable number.

8116872157 is a deficient number, since it is larger than the sum of its proper divisors (1).

8116872157 is an equidigital number, since it uses as much as digits as its factorization.

8116872157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 188160, while the sum is 46.

The square root of 8116872157 is about 90093.6854446526. The cubic root of 8116872157 is about 2009.6923002000.

The spelling of 8116872157 in words is "eight billion, one hundred sixteen million, eight hundred seventy-two thousand, one hundred fifty-seven".