16444121560 has 32 divisors (see below), whose sum is σ = 37002944160. Its totient is φ = 6576996096.

The previous prime is 16444121549. The next prime is 16444121563. The reversal of 16444121560 is 6512144461.

It is a super-3 number, since 3×16444121560³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16444121563) 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, 717397 + ... + 739963.

It is an arithmetic number, because the mean of its divisors is an integer number (1156342005).

Almost surely, 2^16444121560 is an apocalyptic number.

16444121560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16444121560 is an abundant number, since it is smaller than the sum of its proper divisors (20558822600).

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

16444121560 is a wasteful number, since it uses less digits than its factorization.

16444121560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40795 (or 40791 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 16444121560 in words is "sixteen billion, four hundred forty-four million, one hundred twenty-one thousand, five hundred sixty".