16512253101 has 12 divisors (see below), whose sum is σ = 23857813980. Its totient is φ = 11005038720.

The previous prime is 16512253099. The next prime is 16512253129. The reversal of 16512253101 is 10135221561.

16512253101 is a `hidden beast` number, since 1 + 6 + 5 + 122 + 531 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6847397001 + 9664856100 = 82749^2 + 98310^2 .

It is not a de Polignac number, because 16512253101 - 2¹ = 16512253099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16512253201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 227196 + ... + 290933.

It is an arithmetic number, because the mean of its divisors is an integer number (1988151165).

Almost surely, 2^16512253101 is an apocalyptic number.

It is an amenable number.

16512253101 is a deficient number, since it is larger than the sum of its proper divisors (7345560879).

16512253101 is a wasteful number, since it uses less digits than its factorization.

16512253101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521676 (or 521673 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

Adding to 16512253101 its reverse (10135221561), we get a palindrome (26647474662).

The spelling of 16512253101 in words is "sixteen billion, five hundred twelve million, two hundred fifty-three thousand, one hundred one".