654253900127 has 4 divisors (see below), whose sum is σ = 654308565336. Its totient is φ = 654199234920.

The previous prime is 654253900123. The next prime is 654253900169. The reversal of 654253900127 is 721009352456.

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 654253900127 - 2² = 654253900123 is a prime.

It is a super-2 number, since 2×654253900127² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654253900121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27314648 + ... + 27338589.

It is an arithmetic number, because the mean of its divisors is an integer number (163577141334).

Almost surely, 2^654253900127 is an apocalyptic number.

654253900127 is a deficient number, since it is larger than the sum of its proper divisors (54665209).

654253900127 is a wasteful number, since it uses less digits than its factorization.

654253900127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54665208.

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 654253900127 in words is "six hundred fifty-four billion, two hundred fifty-three million, nine hundred thousand, one hundred twenty-seven".