21844628058 has 64 divisors (see below), whose sum is σ = 49097664000. Its totient is φ = 6422122560.

The previous prime is 21844628033. The next prime is 21844628059. The reversal of 21844628058 is 85082644812.

It is a super-3 number, since 3×21844628058³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21844627998 and 21844628016.

It is not an unprimeable number, because it can be changed into a prime (21844628059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 397033 + ... + 448691.

It is an arithmetic number, because the mean of its divisors is an integer number (767151000).

Almost surely, 2^21844628058 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21844628058, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24548832000).

21844628058 is an abundant number, since it is smaller than the sum of its proper divisors (27253035942).

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

21844628058 is a wasteful number, since it uses less digits than its factorization.

21844628058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51867.

The product of its (nonzero) digits is 983040, while the sum is 48.

The spelling of 21844628058 in words is "twenty-one billion, eight hundred forty-four million, six hundred twenty-eight thousand, fifty-eight".