21822859686475 has 24 divisors (see below), whose sum is σ = 27138944835648. Its totient is φ = 17407614528000.

The previous prime is 21822859686457. The next prime is 21822859686491. The reversal of 21822859686475 is 57468695822812.

It is not a de Polignac number, because 21822859686475 - 2⁷ = 21822859686347 is a prime.

It is a hoax number, since the sum of its digits (73) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21822859686398 and 21822859686407.

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 23 ways as a sum of consecutive naturals, for example, 24086377 + ... + 24975973.

It is an arithmetic number, because the mean of its divisors is an integer number (1130789368152).

Almost surely, 2^{21822859686475} is an apocalyptic number.

21822859686475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21822859686475 is a deficient number, since it is larger than the sum of its proper divisors (5316085149173).

21822859686475 is a wasteful number, since it uses less digits than its factorization.

21822859686475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892455 (or 892450 counting only the distinct ones).

The product of its digits is 928972800, while the sum is 73.

The spelling of 21822859686475 in words is "twenty-one trillion, eight hundred twenty-two billion, eight hundred fifty-nine million, six hundred eighty-six thousand, four hundred seventy-five".