621384230016 has 384 divisors, whose sum is σ = 1976041267200. Its totient is φ = 185864140800.

The previous prime is 621384229997. The next prime is 621384230069. The reversal of 621384230016 is 610032483126.

621384230016 is a `hidden beast` number, since 6 + 213 + 8 + 423 + 0 + 0 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×621384230016² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 336428005 + ... + 336429851.

It is an arithmetic number, because the mean of its divisors is an integer number (5145940800).

Almost surely, 2^621384230016 is an apocalyptic number.

621384230016 is a gapful number since it is divisible by the number (66) 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 621384230016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (988020633600).

621384230016 is an abundant number, since it is smaller than the sum of its proper divisors (1354657037184).

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

621384230016 is a wasteful number, since it uses less digits than its factorization.

621384230016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208 (or 2193 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 621384230016 in words is "six hundred twenty-one billion, three hundred eighty-four million, two hundred thirty thousand, sixteen".