16358821458 has 64 divisors (see below), whose sum is σ = 38638313472. Its totient is φ = 4518426240.

The previous prime is 16358821447. The next prime is 16358821459. The reversal of 16358821458 is 85412885361.

It is a super-2 number, since 2×16358821458² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16358821458.

It is not an unprimeable number, because it can be changed into a prime (16358821459) 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, 1338885 + ... + 1351047.

It is an arithmetic number, because the mean of its divisors is an integer number (603723648).

Almost surely, 2^16358821458 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16358821458, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19319156736).

16358821458 is an abundant number, since it is smaller than the sum of its proper divisors (22279492014).

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

16358821458 is a wasteful number, since it uses less digits than its factorization.

16358821458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13239.

The product of its digits is 1843200, while the sum is 51.

The spelling of 16358821458 in words is "sixteen billion, three hundred fifty-eight million, eight hundred twenty-one thousand, four hundred fifty-eight".