8213478282678 has 16 divisors (see below), whose sum is σ = 17393248128240. Its totient is φ = 2576777500416.

The previous prime is 8213478282613. The next prime is 8213478282689. The reversal of 8213478282678 is 8762828743128.

It is a super-3 number, since 3×8213478282678³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40262148343 + ... + 40262148546.

It is an arithmetic number, because the mean of its divisors is an integer number (1087078008015).

Almost surely, 2^{8213478282678} is an apocalyptic number.

8213478282678 is an abundant number, since it is smaller than the sum of its proper divisors (9179769845562).

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

8213478282678 is a wasteful number, since it uses less digits than its factorization.

8213478282678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80524296911.

The product of its digits is 115605504, while the sum is 66.

The spelling of 8213478282678 in words is "eight trillion, two hundred thirteen billion, four hundred seventy-eight million, two hundred eighty-two thousand, six hundred seventy-eight".