8679490973478 has 96 divisors (see below), whose sum is σ = 20400634485504. Its totient is φ = 2651099590656.

The previous prime is 8679490973471. The next prime is 8679490973509. The reversal of 8679490973478 is 8743790949768.

8679490973478 is a `hidden beast` number, since 8 + 6 + 7 + 9 + 490 + 97 + 34 + 7 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 8679490973397 and 8679490973406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8679490973471) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18184650 + ... + 18655842.

It is an arithmetic number, because the mean of its divisors is an integer number (212506609224).

Almost surely, 2^{8679490973478} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8679490973478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10200317242752).

8679490973478 is an abundant number, since it is smaller than the sum of its proper divisors (11721143512026).

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

8679490973478 is a wasteful number, since it uses less digits than its factorization.

8679490973478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471790 (or 471787 counting only the distinct ones).

The product of its (nonzero) digits is 4608866304, while the sum is 81.

The spelling of 8679490973478 in words is "eight trillion, six hundred seventy-nine billion, four hundred ninety million, nine hundred seventy-three thousand, four hundred seventy-eight".