4006321455620 has 192 divisors, whose sum is σ = 9932510649600. Its totient is φ = 1341483171840.

The previous prime is 4006321455593. The next prime is 4006321455641. The reversal of 4006321455620 is 265541236004.

It is a super-2 number, since 2×4006321455620² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 156039104 + ... + 156064776.

It is an arithmetic number, because the mean of its divisors is an integer number (51731826300).

Almost surely, 2^{4006321455620} 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 4006321455620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4966255324800).

4006321455620 is an abundant number, since it is smaller than the sum of its proper divisors (5926189193980).

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

4006321455620 is a wasteful number, since it uses less digits than its factorization.

4006321455620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26758 (or 26756 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 4006321455620 in words is "four trillion, six billion, three hundred twenty-one million, four hundred fifty-five thousand, six hundred twenty".