16003625988 has 144 divisors (see below), whose sum is σ = 47580462720. Its totient is φ = 4155024384.

The previous prime is 16003625987. The next prime is 16003625999. The reversal of 16003625988 is 88952630061.

It is a happy number.

It is a super-2 number, since 2×16003625988² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16003625987) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 262281 + ... + 317487.

It is an arithmetic number, because the mean of its divisors is an integer number (330419880).

Almost surely, 2^16003625988 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 16003625988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23790231360).

16003625988 is an abundant number, since it is smaller than the sum of its proper divisors (31576836732).

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

16003625988 is a wasteful number, since it uses less digits than its factorization.

16003625988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55274 (or 55265 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 16003625988 in words is "sixteen billion, three million, six hundred twenty-five thousand, nine hundred eighty-eight".