22044660435540 has 192 divisors, whose sum is σ = 70223025035520. Its totient is φ = 5739588771840.

The previous prime is 22044660435493. The next prime is 22044660435571. The reversal of 22044660435540 is 4553406644022.

It is a happy number.

22044660435540 is a `hidden beast` number, since 2 + 2 + 0 + 4 + 4 + 6 + 60 + 43 + 5 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1392300 + ... + 6784380.

It is an arithmetic number, because the mean of its divisors is an integer number (365744922060).

Almost surely, 2^{22044660435540} is an apocalyptic number.

22044660435540 is a gapful number since it is divisible by the number (20) 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 22044660435540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35111512517760).

22044660435540 is an abundant number, since it is smaller than the sum of its proper divisors (48178364599980).

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

22044660435540 is a wasteful number, since it uses less digits than its factorization.

22044660435540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5392279 (or 5392271 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 45.

The spelling of 22044660435540 in words is "twenty-two trillion, forty-four billion, six hundred sixty million, four hundred thirty-five thousand, five hundred forty".