1622820326400 has 3168 divisors, whose sum is σ = 7883004205440. Its totient is φ = 309162147840.

The previous prime is 1622820326359. The next prime is 1622820326423. The reversal of 1622820326400 is 46230282261.

1622820326400 is a `hidden beast` number, since 1 + 6 + 2 + 2 + 8 + 2 + 0 + 3 + 2 + 640 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 10336435122 + ... + 10336435278.

Almost surely, 2^{1622820326400} is an apocalyptic number.

1622820326400 is a gapful number since it is divisible by the number (10) 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 1622820326400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3941502102720).

1622820326400 is an abundant number, since it is smaller than the sum of its proper divisors (6260183879040).

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

1622820326400 is a wasteful number, since it uses less digits than its factorization.

1622820326400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The spelling of 1622820326400 in words is "one trillion, six hundred twenty-two billion, eight hundred twenty million, three hundred twenty-six thousand, four hundred".