22018905723855 has 8 divisors (see below), whose sum is σ = 35230249158192. Its totient is φ = 11743416386048.

The previous prime is 22018905723847. The next prime is 22018905723923. The reversal of 22018905723855 is 55832750981022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22018905723855 - 2³ = 22018905723847 is a prime.

It is a super-2 number, since 2×22018905723855² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22018905723795 and 22018905723804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 733963524114 + ... + 733963524143.

It is an arithmetic number, because the mean of its divisors is an integer number (4403781144774).

Almost surely, 2^{22018905723855} is an apocalyptic number.

22018905723855 is a deficient number, since it is larger than the sum of its proper divisors (13211343434337).

22018905723855 is a wasteful number, since it uses less digits than its factorization.

22018905723855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467927048265.

The product of its (nonzero) digits is 12096000, while the sum is 57.

The spelling of 22018905723855 in words is "twenty-two trillion, eighteen billion, nine hundred five million, seven hundred twenty-three thousand, eight hundred fifty-five".