216404332423653 has 32 divisors (see below), whose sum is σ = 316010073636864. Its totient is φ = 130637658600000.

The previous prime is 216404332423627. The next prime is 216404332423753. The reversal of 216404332423653 is 356324233404612.

It is not a de Polignac number, because 216404332423653 - 2⁶ = 216404332423589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216404332423753) 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, 32950828 + ... + 38968778.

It is an arithmetic number, because the mean of its divisors is an integer number (9875314801152).

Almost surely, 2^{216404332423653} is an apocalyptic number.

It is an amenable number.

216404332423653 is a deficient number, since it is larger than the sum of its proper divisors (99605741213211).

216404332423653 is a wasteful number, since it uses less digits than its factorization.

216404332423653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6022257.

The product of its (nonzero) digits is 7464960, while the sum is 48.

The spelling of 216404332423653 in words is "two hundred sixteen trillion, four hundred four billion, three hundred thirty-two million, four hundred twenty-three thousand, six hundred fifty-three".