8117611249 has 4 divisors (see below), whose sum is σ = 8855575920. Its totient is φ = 7379646580.

The previous prime is 8117611247. The next prime is 8117611253. The reversal of 8117611249 is 9421167118.

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.

It is a cyclic number.

It is not a de Polignac number, because 8117611249 - 2¹ = 8117611247 is a prime.

It is a super-2 number, since 2×8117611249² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8117611247) 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, 368982319 + ... + 368982340.

It is an arithmetic number, because the mean of its divisors is an integer number (2213893980).

Almost surely, 2^8117611249 is an apocalyptic number.

It is an amenable number.

8117611249 is a deficient number, since it is larger than the sum of its proper divisors (737964671).

8117611249 is a wasteful number, since it uses less digits than its factorization.

8117611249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737964670.

The product of its digits is 24192, while the sum is 40.

The square root of 8117611249 is about 90097.7871481869. The cubic root of 8117611249 is about 2009.7532967017.

The spelling of 8117611249 in words is "eight billion, one hundred seventeen million, six hundred eleven thousand, two hundred forty-nine".