20552165620000 has 480 divisors, whose sum is σ = 59485265021952. Its totient is φ = 6841037952000.

The previous prime is 20552165619961. The next prime is 20552165620033. The reversal of 20552165620000 is 2656125502.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1005329779 + ... + 1005350221.

Almost surely, 2^{20552165620000} is an apocalyptic number.

20552165620000 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 20552165620000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29742632510976).

20552165620000 is an abundant number, since it is smaller than the sum of its proper divisors (38933099401952).

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

20552165620000 is a wasteful number, since it uses less digits than its factorization.

20552165620000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20690 (or 20667 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 20552165620000 in words is "twenty trillion, five hundred fifty-two billion, one hundred sixty-five million, six hundred twenty thousand".