216402540223435 has 4 divisors (see below), whose sum is σ = 259683048268128. Its totient is φ = 173122032178744.

The previous prime is 216402540223399. The next prime is 216402540223577. The reversal of 216402540223435 is 534322045204612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216402540223435 - 2²⁷ = 216402406005707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216402540223391 and 216402540223400.

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, 21640254022339 + ... + 21640254022348.

It is an arithmetic number, because the mean of its divisors is an integer number (64920762067032).

Almost surely, 2^{216402540223435} is an apocalyptic number.

216402540223435 is a deficient number, since it is larger than the sum of its proper divisors (43280508044693).

216402540223435 is an equidigital number, since it uses as much as digits as its factorization.

216402540223435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43280508044692.

The product of its (nonzero) digits is 1382400, while the sum is 43.

The spelling of 216402540223435 in words is "two hundred sixteen trillion, four hundred two billion, five hundred forty million, two hundred twenty-three thousand, four hundred thirty-five".