8712162109 has 4 divisors (see below), whose sum is σ = 9956756704. Its totient is φ = 7467567516.

The previous prime is 8712162077. The next prime is 8712162127. The reversal of 8712162109 is 9012612178.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9012612178 = 2 ⋅4506306089.

It is a cyclic number.

It is not a de Polignac number, because 8712162109 - 2⁵ = 8712162077 is a prime.

It is a super-2 number, since 2×8712162109² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8712162149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 622297287 + ... + 622297300.

It is an arithmetic number, because the mean of its divisors is an integer number (2489189176).

Almost surely, 2^8712162109 is an apocalyptic number.

It is an amenable number.

8712162109 is a deficient number, since it is larger than the sum of its proper divisors (1244594595).

8712162109 is a wasteful number, since it uses less digits than its factorization.

8712162109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244594594.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 8712162109 is about 93338.9635093512. The cubic root of 8712162109 is about 2057.6680581844.

The spelling of 8712162109 in words is "eight billion, seven hundred twelve million, one hundred sixty-two thousand, one hundred nine".