8631198642222 has 32 divisors (see below), whose sum is σ = 20655860000160. Its totient is φ = 2655753428160.

The previous prime is 8631198642161. The next prime is 8631198642239. The reversal of 8631198642222 is 2222468911368.

8631198642222 is a `hidden beast` number, since 8 + 6 + 3 + 1 + 198 + 6 + 422 + 22 = 666.

It is a super-2 number, since 2×8631198642222² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6147576679 + ... + 6147578082.

It is an arithmetic number, because the mean of its divisors is an integer number (645495625005).

Almost surely, 2^{8631198642222} is an apocalyptic number.

8631198642222 is an abundant number, since it is smaller than the sum of its proper divisors (12024661357938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8631198642222 is a wasteful number, since it uses less digits than its factorization.

8631198642222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12295154785 (or 12295154779 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The spelling of 8631198642222 in words is "eight trillion, six hundred thirty-one billion, one hundred ninety-eight million, six hundred forty-two thousand, two hundred twenty-two".