22154400420055 has 16 divisors (see below), whose sum is σ = 26770300492320. Its totient is φ = 17600413891968.

The previous prime is 22154400420029. The next prime is 22154400420067. The reversal of 22154400420055 is 55002400445122.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22154400420055 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22154400420055.

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, 14275065 + ... + 15750754.

It is an arithmetic number, because the mean of its divisors is an integer number (1673143780770).

Almost surely, 2^{22154400420055} is an apocalyptic number.

22154400420055 is a deficient number, since it is larger than the sum of its proper divisors (4615900072265).

22154400420055 is a wasteful number, since it uses less digits than its factorization.

22154400420055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30026850.

The product of its (nonzero) digits is 64000, while the sum is 34.

Adding to 22154400420055 its reverse (55002400445122), we get a palindrome (77156800865177).

The spelling of 22154400420055 in words is "twenty-two trillion, one hundred fifty-four billion, four hundred million, four hundred twenty thousand, fifty-five".