22134651678 has 64 divisors (see below), whose sum is σ = 52139142720. Its totient is φ = 6936523776.

The previous prime is 22134651659. The next prime is 22134651709. The reversal of 22134651678 is 87615643122.

22134651678 is a `hidden beast` number, since 2 + 21 + 3 + 46 + 516 + 78 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 847300 + ... + 873032.

It is an arithmetic number, because the mean of its divisors is an integer number (814674105).

Almost surely, 2^22134651678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22134651678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26069571360).

22134651678 is an abundant number, since it is smaller than the sum of its proper divisors (30004491042).

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

22134651678 is a wasteful number, since it uses less digits than its factorization.

22134651678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26698 (or 26692 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The spelling of 22134651678 in words is "twenty-two billion, one hundred thirty-four million, six hundred fifty-one thousand, six hundred seventy-eight".