16081477888 has 144 divisors (see below), whose sum is σ = 38388478464. Its totient is φ = 6579486720.

The previous prime is 16081477873. The next prime is 16081477889. The reversal of 16081477888 is 88877418061.

It is a super-2 number, since 2×16081477888² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16081477889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3450856 + ... + 3455512.

It is an arithmetic number, because the mean of its divisors is an integer number (266586656).

Almost surely, 2^16081477888 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 16081477888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19194239232).

16081477888 is an abundant number, since it is smaller than the sum of its proper divisors (22307000576).

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

16081477888 is an equidigital number, since it uses as much as digits as its factorization.

16081477888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4768 (or 4754 counting only the distinct ones).

The product of its (nonzero) digits is 4816896, while the sum is 58.

The spelling of 16081477888 in words is "sixteen billion, eighty-one million, four hundred seventy-seven thousand, eight hundred eighty-eight".