216137645001 has 32 divisors (see below), whose sum is σ = 328973356800. Its totient is φ = 140148247680.

The previous prime is 216137644979. The next prime is 216137645027. The reversal of 216137645001 is 100546731612.

216137645001 is a `hidden beast` number, since 2 + 1 + 6 + 1 + 3 + 7 + 645 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 216137645001 - 2¹⁴ = 216137628617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216137645081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2929596 + ... + 3002466.

It is an arithmetic number, because the mean of its divisors is an integer number (10280417400).

Almost surely, 2^216137645001 is an apocalyptic number.

It is an amenable number.

216137645001 is a deficient number, since it is larger than the sum of its proper divisors (112835711799).

216137645001 is a wasteful number, since it uses less digits than its factorization.

216137645001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75886 (or 75880 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 216137645001 in words is "two hundred sixteen billion, one hundred thirty-seven million, six hundred forty-five thousand, one".