654554056959109 has 2 divisors, whose sum is σ = 654554056959110. Its totient is φ = 654554056959108.

The previous prime is 654554056959037. The next prime is 654554056959113. The reversal of 654554056959109 is 901959650455456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 654225387508900 + 328669450209 = 25577830^2 + 573297^2 .

It is a cyclic number.

It is not a de Polignac number, because 654554056959109 - 2⁹ = 654554056958597 is a prime.

It is a super-2 number, since 2×654554056959109² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654554056959139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327277028479554 + 327277028479555.

It is an arithmetic number, because the mean of its divisors is an integer number (327277028479555).

Almost surely, 2^{654554056959109} is an apocalyptic number.

It is an amenable number.

654554056959109 is a deficient number, since it is larger than the sum of its proper divisors (1).

654554056959109 is an equidigital number, since it uses as much as digits as its factorization.

654554056959109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1312200000, while the sum is 73.

The spelling of 654554056959109 in words is "six hundred fifty-four trillion, five hundred fifty-four billion, fifty-six million, nine hundred fifty-nine thousand, one hundred nine".