8134623665 has 16 divisors (see below), whose sum is σ = 11515929600. Its totient is φ = 5398090560.

The previous prime is 8134623661. The next prime is 8134623671. The reversal of 8134623665 is 5663264318.

It is a happy number.

It is not a de Polignac number, because 8134623665 - 2² = 8134623661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8134623661) 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, 3747590 + ... + 3749759.

It is an arithmetic number, because the mean of its divisors is an integer number (719745600).

Almost surely, 2^8134623665 is an apocalyptic number.

It is an amenable number.

8134623665 is a deficient number, since it is larger than the sum of its proper divisors (3381305935).

8134623665 is a wasteful number, since it uses less digits than its factorization.

8134623665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7497392.

The product of its digits is 622080, while the sum is 44.

The square root of 8134623665 is about 90192.1485773568. The cubic root of 8134623665 is about 2011.1562916167.

The spelling of 8134623665 in words is "eight billion, one hundred thirty-four million, six hundred twenty-three thousand, six hundred sixty-five".