216422514430405 has 8 divisors (see below), whose sum is σ = 274983900688152. Its totient is φ = 162953422629888.

The previous prime is 216422514430403. The next prime is 216422514430411. The reversal of 216422514430405 is 504034415224612.

It can be written as a sum of positive squares in 4 ways, for example, as 2046825232929 + 214375689197476 = 1430673^2 + 14641574^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 216422514430405 - 2¹ = 216422514430403 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216422514430403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1273073614212 + ... + 1273073614381.

It is an arithmetic number, because the mean of its divisors is an integer number (34372987586019).

Almost surely, 2^{216422514430405} is an apocalyptic number.

It is an amenable number.

216422514430405 is a deficient number, since it is larger than the sum of its proper divisors (58561386257747).

216422514430405 is a wasteful number, since it uses less digits than its factorization.

216422514430405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2546147228615.

The product of its (nonzero) digits is 921600, while the sum is 43.

The spelling of 216422514430405 in words is "two hundred sixteen trillion, four hundred twenty-two billion, five hundred fourteen million, four hundred thirty thousand, four hundred five".