8663426078 has 4 divisors (see below), whose sum is σ = 12995139120. Its totient is φ = 4331713038.

The previous prime is 8663426071. The next prime is 8663426113. The reversal of 8663426078 is 8706243668.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8663426071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2165856518 + ... + 2165856521.

It is an arithmetic number, because the mean of its divisors is an integer number (3248784780).

Almost surely, 2^8663426078 is an apocalyptic number.

8663426078 is a deficient number, since it is larger than the sum of its proper divisors (4331713042).

8663426078 is a wasteful number, since it uses less digits than its factorization.

8663426078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4331713041.

The product of its (nonzero) digits is 2322432, while the sum is 50.

The square root of 8663426078 is about 93077.5272447652. The cubic root of 8663426078 is about 2053.8240008518.

The spelling of 8663426078 in words is "eight billion, six hundred sixty-three million, four hundred twenty-six thousand, seventy-eight".