16516010020 has 24 divisors (see below), whose sum is σ = 34700311800. Its totient is φ = 6603224832.

The previous prime is 16516010011. The next prime is 16516010099. The reversal of 16516010020 is 2001061561.

It can be written as a sum of positive squares in 4 ways, for example, as 2692364544 + 13823645476 = 51888^2 + 117574^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16516009973 and 16516010000.

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, 155875 + ... + 239434.

It is an arithmetic number, because the mean of its divisors is an integer number (1445846325).

Almost surely, 2^16516010020 is an apocalyptic number.

16516010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16516010020 is an abundant number, since it is smaller than the sum of its proper divisors (18184301780).

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

16516010020 is a wasteful number, since it uses less digits than its factorization.

16516010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397407 (or 397405 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

Adding to 16516010020 its reverse (2001061561), we get a palindrome (18517071581).

The spelling of 16516010020 in words is "sixteen billion, five hundred sixteen million, ten thousand, twenty".