22018959648 has 240 divisors, whose sum is σ = 74777117184. Its totient is φ = 6225776640.

The previous prime is 22018959643. The next prime is 22018959653. The reversal of 22018959648 is 84695981022.

It is a happy number.

22018959648 is a `hidden beast` number, since 2 + 2 + 0 + 1 + 8 + 9 + 596 + 48 = 666.

It is an interprime number because it is at equal distance from previous prime (22018959643) and next prime (22018959653).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 22018959594 and 22018959603.

It is not an unprimeable number, because it can be changed into a prime (22018959643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1753713 + ... + 1766223.

Almost surely, 2^22018959648 is an apocalyptic number.

22018959648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22018959648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37388558592).

22018959648 is an abundant number, since it is smaller than the sum of its proper divisors (52758157536).

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

22018959648 is a wasteful number, since it uses less digits than its factorization.

22018959648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12637 (or 12620 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 54.

The spelling of 22018959648 in words is "twenty-two billion, eighteen million, nine hundred fifty-nine thousand, six hundred forty-eight".