216413655 has 16 divisors (see below), whose sum is σ = 366630624. Its totient is φ = 108631040.

The previous prime is 216413581. The next prime is 216413671. The reversal of 216413655 is 556314612.

It is not a de Polignac number, because 216413655 - 2¹³ = 216405463 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424086 + ... + 424595.

It is an arithmetic number, because the mean of its divisors is an integer number (22914414).

Almost surely, 2^216413655 is an apocalyptic number.

216413655 is a deficient number, since it is larger than the sum of its proper divisors (150216969).

216413655 is a wasteful number, since it uses less digits than its factorization.

216413655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848706.

The product of its digits is 21600, while the sum is 33.

The square root of 216413655 is about 14711.0045544144. The cubic root of 216413655 is about 600.3827696493.

The spelling of 216413655 in words is "two hundred sixteen million, four hundred thirteen thousand, six hundred fifty-five".