216867652453 has 4 divisors (see below), whose sum is σ = 218523130848. Its totient is φ = 215212174060.

The previous prime is 216867652451. The next prime is 216867652471. The reversal of 216867652453 is 354256768612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 216867652453 - 2¹ = 216867652451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 216867652394 and 216867652403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216867652451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 827739001 + ... + 827739262.

It is an arithmetic number, because the mean of its divisors is an integer number (54630782712).

Almost surely, 2^216867652453 is an apocalyptic number.

It is an amenable number.

216867652453 is a deficient number, since it is larger than the sum of its proper divisors (1655478395).

216867652453 is a wasteful number, since it uses less digits than its factorization.

216867652453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655478394.

The product of its digits is 14515200, while the sum is 55.

The spelling of 216867652453 in words is "two hundred sixteen billion, eight hundred sixty-seven million, six hundred fifty-two thousand, four hundred fifty-three".