216154346064545 has 32 divisors (see below), whose sum is σ = 304369476187392. Its totient is φ = 144279036824832.

The previous prime is 216154346064499. The next prime is 216154346064563. The reversal of 216154346064545 is 545460643451612.

It is a happy number.

It is not a de Polignac number, because 216154346064545 - 2³² = 216150051097249 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 244651442 + ... + 245533371.

It is an arithmetic number, because the mean of its divisors is an integer number (9511546130856).

Almost surely, 2^{216154346064545} is an apocalyptic number.

It is an amenable number.

216154346064545 is a deficient number, since it is larger than the sum of its proper divisors (88215130122847).

216154346064545 is a wasteful number, since it uses less digits than its factorization.

216154346064545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490185161.

The product of its (nonzero) digits is 41472000, while the sum is 56.

The spelling of 216154346064545 in words is "two hundred sixteen trillion, one hundred fifty-four billion, three hundred forty-six million, sixty-four thousand, five hundred forty-five".