1620696064000 has 448 divisors, whose sum is σ = 4384395916992. Its totient is φ = 594542592000.

The previous prime is 1620696063947. The next prime is 1620696064051. The reversal of 1620696064000 is 4606960261.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2808831712 + ... + 2808832288.

It is an arithmetic number, because the mean of its divisors is an integer number (9786598029).

Almost surely, 2^{1620696064000} is an apocalyptic number.

1620696064000 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 1620696064000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2192197958496).

1620696064000 is an abundant number, since it is smaller than the sum of its proper divisors (2763699852992).

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

1620696064000 is an equidigital number, since it uses as much as digits as its factorization.

1620696064000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842 (or 808 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The spelling of 1620696064000 in words is "one trillion, six hundred twenty billion, six hundred ninety-six million, sixty-four thousand".