216630136541 has 32 divisors (see below), whose sum is σ = 271456200960. Its totient is φ = 168312328704.

The previous prime is 216630136529. The next prime is 216630136571. The reversal of 216630136541 is 145631036612.

216630136541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 216630136541 - 2⁶ = 216630136477 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216630136495 and 216630136504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216630136571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1450046 + ... + 1592448.

It is an arithmetic number, because the mean of its divisors is an integer number (8483006280).

Almost surely, 2^216630136541 is an apocalyptic number.

It is an amenable number.

216630136541 is a deficient number, since it is larger than the sum of its proper divisors (54826064419).

216630136541 is a wasteful number, since it uses less digits than its factorization.

216630136541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142725.

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 216630136541 in words is "two hundred sixteen billion, six hundred thirty million, one hundred thirty-six thousand, five hundred forty-one".