16490771520 has 112 divisors (see below), whose sum is σ = 52847857728. Its totient is φ = 4356413440.

The previous prime is 16490771489. The next prime is 16490771527. The reversal of 16490771520 is 2517709461.

It is a happy number.

16490771520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16490771520² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16490771527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22450 + ... + 182990.

Almost surely, 2^16490771520 is an apocalyptic number.

16490771520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16490771520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26423928864).

16490771520 is an abundant number, since it is smaller than the sum of its proper divisors (36357086208).

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

16490771520 is a wasteful number, since it uses less digits than its factorization.

16490771520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160668 (or 160658 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 42.

The spelling of 16490771520 in words is "sixteen billion, four hundred ninety million, seven hundred seventy-one thousand, five hundred twenty".