654545215650553 has 4 divisors (see below), whose sum is σ = 654732710702928. Its totient is φ = 654357720598180.

The previous prime is 654545215650539. The next prime is 654545215650581. The reversal of 654545215650553 is 355056512545456.

It is a happy number.

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-654545215650553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 654545215650491 and 654545215650500.

It is not an unprimeable number, because it can be changed into a prime (654545215650593) 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, 93747520951 + ... + 93747527932.

It is an arithmetic number, because the mean of its divisors is an integer number (163683177675732).

Almost surely, 2^{654545215650553} is an apocalyptic number.

It is an amenable number.

654545215650553 is a deficient number, since it is larger than the sum of its proper divisors (187495052375).

654545215650553 is a wasteful number, since it uses less digits than its factorization.

654545215650553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187495052374.

The product of its (nonzero) digits is 270000000, while the sum is 61.

The spelling of 654545215650553 in words is "six hundred fifty-four trillion, five hundred forty-five billion, two hundred fifteen million, six hundred fifty thousand, five hundred fifty-three".