1626223604544 has 2016 divisors, whose sum is σ = 6626867380224. Its totient is φ = 383758663680.

The previous prime is 1626223604531. The next prime is 1626223604549. The reversal of 1626223604544 is 4454063226261.

It is a happy number.

1626223604544 is a `hidden beast` number, since 1 + 6 + 26 + 2 + 23 + 60 + 4 + 544 = 666.

It is a tau number, because it is divible by the number of its divisors (2016).

It is a self number, because there is not a number n which added to its sum of digits gives 1626223604544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1626223604549) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 12804910209 + ... + 12804910335.

Almost surely, 2^{1626223604544} is an apocalyptic number.

1626223604544 is a gapful number since it is divisible by the number (14) 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 1626223604544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3313433690112).

1626223604544 is an abundant number, since it is smaller than the sum of its proper divisors (5000643775680).

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

1626223604544 is a wasteful number, since it uses less digits than its factorization.

1626223604544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 45.

The spelling of 1626223604544 in words is "one trillion, six hundred twenty-six billion, two hundred twenty-three million, six hundred four thousand, five hundred forty-four".