653218908319 has 4 divisors (see below), whose sum is σ = 653224003920. Its totient is φ = 653213812720.

The previous prime is 653218908311. The next prime is 653218908343. The reversal of 653218908319 is 913809812356.

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 653218908319 - 2³ = 653218908311 is a prime.

It is a super-2 number, since 2×653218908319² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 653218908319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653218908311) 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, 2350414 + ... + 2613595.

It is an arithmetic number, because the mean of its divisors is an integer number (163306000980).

Almost surely, 2^653218908319 is an apocalyptic number.

653218908319 is a deficient number, since it is larger than the sum of its proper divisors (5095601).

653218908319 is a wasteful number, since it uses less digits than its factorization.

653218908319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5095600.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 653218908319 in words is "six hundred fifty-three billion, two hundred eighteen million, nine hundred eight thousand, three hundred nineteen".