16158221912 has 64 divisors (see below), whose sum is σ = 35535456000. Its totient is φ = 6744974976.

The previous prime is 16158221873. The next prime is 16158221951. The reversal of 16158221912 is 21912285161.

16158221912 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (16158221873) and next prime (16158221951).

It is a super-2 number, since 2×16158221912² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 337703 + ... + 382569.

It is an arithmetic number, because the mean of its divisors is an integer number (555241500).

Almost surely, 2^16158221912 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 16158221912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17767728000).

16158221912 is an abundant number, since it is smaller than the sum of its proper divisors (19377234088).

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

16158221912 is a wasteful number, since it uses less digits than its factorization.

16158221912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45048 (or 45044 counting only the distinct ones).

The product of its digits is 17280, while the sum is 38.

The spelling of 16158221912 in words is "sixteen billion, one hundred fifty-eight million, two hundred twenty-one thousand, nine hundred twelve".