22154005646406 has 12 divisors (see below), whose sum is σ = 48000345567252. Its totient is φ = 7384668548796.

The previous prime is 22154005646341. The next prime is 22154005646429. The reversal of 22154005646406 is 60464650045122.

22154005646406 is a `hidden beast` number, since 2 + 2 + 1 + 5 + 40 + 0 + 564 + 6 + 40 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 615389045716 + ... + 615389045751.

It is an arithmetic number, because the mean of its divisors is an integer number (4000028797271).

Almost surely, 2^{22154005646406} is an apocalyptic number.

22154005646406 is an abundant number, since it is smaller than the sum of its proper divisors (25846339920846).

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

22154005646406 is a wasteful number, since it uses less digits than its factorization.

22154005646406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230778091475 (or 1230778091472 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 45.

The spelling of 22154005646406 in words is "twenty-two trillion, one hundred fifty-four billion, five million, six hundred forty-six thousand, four hundred six".