8124664478 has 16 divisors (see below), whose sum is σ = 13930053504. Its totient is φ = 3481484760.

The previous prime is 8124664477. The next prime is 8124664487. The reversal of 8124664478 is 8744664218.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8124664477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64601 + ... + 142907.

It is an arithmetic number, because the mean of its divisors is an integer number (870628344).

Almost surely, 2^8124664478 is an apocalyptic number.

8124664478 is a deficient number, since it is larger than the sum of its proper divisors (5805389026).

8124664478 is a wasteful number, since it uses less digits than its factorization.

8124664478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85727.

The product of its digits is 2064384, while the sum is 50.

The square root of 8124664478 is about 90136.9207261930. The cubic root of 8124664478 is about 2010.3352062583.

The spelling of 8124664478 in words is "eight billion, one hundred twenty-four million, six hundred sixty-four thousand, four hundred seventy-eight".