1621092000000 has 504 divisors, whose sum is σ = 5883770311776. Its totient is φ = 392960000000.

The previous prime is 1621091999983. The next prime is 1621092000023. The reversal of 1621092000000 is 2901261.

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 55 ways as a sum of consecutive naturals, for example, 131993860 + ... + 132006140.

It is an arithmetic number, because the mean of its divisors is an integer number (11674147444).

Almost surely, 2^{1621092000000} is an apocalyptic number.

1621092000000 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 1621092000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2941885155888).

1621092000000 is an abundant number, since it is smaller than the sum of its proper divisors (4262678311776).

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

1621092000000 is an frugal number, since it uses more digits than its factorization.

1621092000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12341 (or 12302 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1621092000000 its reverse (2901261), we get a palindrome (1621094901261).

The spelling of 1621092000000 in words is "one trillion, six hundred twenty-one billion, ninety-two million", and thus it is an aban number.