16489212920 has 32 divisors (see below), whose sum is σ = 37107184320. Its totient is φ = 6594537600.

The previous prime is 16489212919. The next prime is 16489212977. The reversal of 16489212920 is 2921298461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219329 + ... + 284751.

It is an arithmetic number, because the mean of its divisors is an integer number (1159599510).

Almost surely, 2^16489212920 is an apocalyptic number.

16489212920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16489212920 is an abundant number, since it is smaller than the sum of its proper divisors (20617971400).

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

16489212920 is a wasteful number, since it uses less digits than its factorization.

16489212920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71735 (or 71731 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 16489212920 in words is "sixteen billion, four hundred eighty-nine million, two hundred twelve thousand, nine hundred twenty".