621889920000 has 1760 divisors, whose sum is σ = 2555373268800. Its totient is φ = 148635648000.

The previous prime is 621889919953. The next prime is 621889920007. The reversal of 621889920000 is 29988126.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621889920007) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 8519039964 + ... + 8519040036.

It is an arithmetic number, because the mean of its divisors is an integer number (1451916630).

Almost surely, 2^621889920000 is an apocalyptic number.

621889920000 is a gapful number since it is divisible by the number (60) 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 621889920000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1277686634400).

621889920000 is an abundant number, since it is smaller than the sum of its proper divisors (1933483348800).

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

621889920000 is a wasteful number, since it uses less digits than its factorization.

621889920000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 621889920000 in words is "six hundred twenty-one billion, eight hundred eighty-nine million, nine hundred twenty thousand".