653766531189 has 4 divisors (see below), whose sum is σ = 871688708256. Its totient is φ = 435844354124.

The previous prime is 653766531179. The next prime is 653766531241. The reversal of 653766531189 is 981135667356.

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 a de Polignac number, because none of the positive numbers 2^k-653766531189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653766531179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108961088529 + ... + 108961088534.

It is an arithmetic number, because the mean of its divisors is an integer number (217922177064).

Almost surely, 2^653766531189 is an apocalyptic number.

It is an amenable number.

653766531189 is a deficient number, since it is larger than the sum of its proper divisors (217922177067).

653766531189 is a wasteful number, since it uses less digits than its factorization.

653766531189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217922177066.

The product of its digits is 24494400, while the sum is 60.

The spelling of 653766531189 in words is "six hundred fifty-three billion, seven hundred sixty-six million, five hundred thirty-one thousand, one hundred eighty-nine".