621108622152 has 108 divisors (see below), whose sum is σ = 1697502409785. Its totient is φ = 205165995840.

The previous prime is 621108622111. The next prime is 621108622159. The reversal of 621108622152 is 251226801126.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

621108622152 is a `hidden beast` number, since 6 + 2 + 1 + 10 + 8 + 622 + 15 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 521766407556 + 99342214596 = 722334^2 + 315186^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=557274.

It is a super-2 number, since 2×621108622152² (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 not an unprimeable number, because it can be changed into a prime (621108622159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 876034374 + ... + 876035082.

Almost surely, 2^621108622152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 621108622152

621108622152 is an abundant number, since it is smaller than the sum of its proper divisors (1076393787633).

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

621108622152 is an equidigital number, since it uses as much as digits as its factorization.

621108622152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692 (or 845 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 621108622152 in words is "six hundred twenty-one billion, one hundred eight million, six hundred twenty-two thousand, one hundred fifty-two".