16535211541 has 4 divisors (see below), whose sum is σ = 16547186284. Its totient is φ = 16523236800.

The previous prime is 16535211523. The next prime is 16535211571. The reversal of 16535211541 is 14511253561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12559909041 + 3975302500 = 112071^2 + 63050^2 .

It is a cyclic number.

It is not a de Polignac number, because 16535211541 - 2⁹ = 16535211029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16535211497 and 16535211506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16535211521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5985300 + ... + 5988061.

It is an arithmetic number, because the mean of its divisors is an integer number (4136796571).

Almost surely, 2^16535211541 is an apocalyptic number.

It is an amenable number.

16535211541 is a deficient number, since it is larger than the sum of its proper divisors (11974743).

16535211541 is a wasteful number, since it uses less digits than its factorization.

16535211541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11974742.

The product of its digits is 18000, while the sum is 34.

The spelling of 16535211541 in words is "sixteen billion, five hundred thirty-five million, two hundred eleven thousand, five hundred forty-one".