8661426063 has 4 divisors (see below), whose sum is σ = 11548568088. Its totient is φ = 5774284040.

The previous prime is 8661426061. The next prime is 8661426113. The reversal of 8661426063 is 3606241668.

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

It is a cyclic number.

It is not a de Polignac number, because 8661426063 - 2¹ = 8661426061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8661426061) 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, 1443571008 + ... + 1443571013.

It is an arithmetic number, because the mean of its divisors is an integer number (2887142022).

Almost surely, 2^8661426063 is an apocalyptic number.

8661426063 is a deficient number, since it is larger than the sum of its proper divisors (2887142025).

8661426063 is a wasteful number, since it uses less digits than its factorization.

8661426063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887142024.

The product of its (nonzero) digits is 248832, while the sum is 42.

The square root of 8661426063 is about 93066.7828121291. The cubic root of 8661426063 is about 2053.6659419458.

The spelling of 8661426063 in words is "eight billion, six hundred sixty-one million, four hundred twenty-six thousand, sixty-three".