1620222912000 has 3360 divisors, whose sum is σ = 7794913718592. Its totient is φ = 328458240000.

The previous prime is 1620222911999. The next prime is 1620222912053. The reversal of 1620222912000 is 2192220261.

It is a happy number.

1620222912000 is a `hidden beast` number, since 1 + 620 + 2 + 2 + 29 + 12 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (3360).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 335 ways as a sum of consecutive naturals, for example, 39517631980 + ... + 39517632020.

Almost surely, 2^{1620222912000} is an apocalyptic number.

1620222912000 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 1620222912000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3897456859296).

1620222912000 is an abundant number, since it is smaller than the sum of its proper divisors (6174690806592).

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

1620222912000 is an frugal number, since it uses more digits than its factorization.

1620222912000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 1620222912000 in words is "one trillion, six hundred twenty billion, two hundred twenty-two million, nine hundred twelve thousand".