216637239265155 has 16 divisors (see below), whose sum is σ = 385132869804960. Its totient is φ = 115539860941344.

The previous prime is 216637239265043. The next prime is 216637239265163. The reversal of 216637239265155 is 551562932736612.

216637239265155 is a `hidden beast` number, since 2 + 1 + 6 + 6 + 3 + 7 + 23 + 92 + 6 + 515 + 5 = 666.

It is not a de Polignac number, because 216637239265155 - 2²⁹ = 216636702394243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 216637239265092 and 216637239265101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 802360145292 + ... + 802360145561.

It is an arithmetic number, because the mean of its divisors is an integer number (24070804362810).

Almost surely, 2^{216637239265155} is an apocalyptic number.

216637239265155 is a deficient number, since it is larger than the sum of its proper divisors (168495630539805).

216637239265155 is a wasteful number, since it uses less digits than its factorization.

216637239265155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604720290867 (or 1604720290861 counting only the distinct ones).

The product of its digits is 122472000, while the sum is 63.

The spelling of 216637239265155 in words is "two hundred sixteen trillion, six hundred thirty-seven billion, two hundred thirty-nine million, two hundred sixty-five thousand, one hundred fifty-five".