16146721344 has 56 divisors (see below), whose sum is σ = 46007812480. Its totient is φ = 4968221184.

The previous prime is 16146721343. The next prime is 16146721373. The reversal of 16146721344 is 44312764161.

It is a super-2 number, since 2×16146721344² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (16146721343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3232024 + ... + 3237015.

It is an arithmetic number, because the mean of its divisors is an integer number (821568080).

Almost surely, 2^16146721344 is an apocalyptic number.

It is an amenable number.

16146721344 is an abundant number, since it is smaller than the sum of its proper divisors (29861091136).

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

16146721344 is a wasteful number, since it uses less digits than its factorization.

16146721344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6469067 (or 6469057 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The spelling of 16146721344 in words is "sixteen billion, one hundred forty-six million, seven hundred twenty-one thousand, three hundred forty-four".