654407681197 has 2 divisors, whose sum is σ = 654407681198. Its totient is φ = 654407681196.

The previous prime is 654407681183. The next prime is 654407681209. The reversal of 654407681197 is 791186704456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 623269196676 + 31138484521 = 789474^2 + 176461^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-654407681197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654447681197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327203840598 + 327203840599.

It is an arithmetic number, because the mean of its divisors is an integer number (327203840599).

Almost surely, 2^654407681197 is an apocalyptic number.

It is an amenable number.

654407681197 is a deficient number, since it is larger than the sum of its proper divisors (1).

654407681197 is an equidigital number, since it uses as much as digits as its factorization.

654407681197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 654407681197 in words is "six hundred fifty-four billion, four hundred seven million, six hundred eighty-one thousand, one hundred ninety-seven".