216743925434 has 8 divisors (see below), whose sum is σ = 325118993940. Its totient is φ = 108370927456.

The previous prime is 216743925397. The next prime is 216743925443. The reversal of 216743925434 is 434529347612.

It can be written as a sum of positive squares in 2 ways, for example, as 203414530225 + 13329395209 = 451015^2 + 115453^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222209 + ... + 694884.

Almost surely, 2^216743925434 is an apocalyptic number.

216743925434 is a deficient number, since it is larger than the sum of its proper divisors (108375068506).

216743925434 is a wasteful number, since it uses less digits than its factorization.

216743925434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035264.

The product of its digits is 4354560, while the sum is 50.

The spelling of 216743925434 in words is "two hundred sixteen billion, seven hundred forty-three million, nine hundred twenty-five thousand, four hundred thirty-four".