8611981475 has 6 divisors (see below), whose sum is σ = 10678857060. Its totient is φ = 6889585160.

The previous prime is 8611981453. The next prime is 8611981487. The reversal of 8611981475 is 5741891168.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-8611981475 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 172239605 + ... + 172239654.

It is an arithmetic number, because the mean of its divisors is an integer number (1779809510).

Almost surely, 2^8611981475 is an apocalyptic number.

8611981475 is a deficient number, since it is larger than the sum of its proper divisors (2066875585).

8611981475 is a wasteful number, since it uses less digits than its factorization.

8611981475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344479269 (or 344479264 counting only the distinct ones).

The product of its digits is 483840, while the sum is 50.

The square root of 8611981475 is about 92800.7622544125. The cubic root of 8611981475 is about 2049.7506319716.

The spelling of 8611981475 in words is "eight billion, six hundred eleven million, nine hundred eighty-one thousand, four hundred seventy-five".