654526420061 has 2 divisors, whose sum is σ = 654526420062. Its totient is φ = 654526420060.

The previous prime is 654526420049. The next prime is 654526420099. The reversal of 654526420061 is 160024625456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 509674627225 + 144851792836 = 713915^2 + 380594^2 .

It is a cyclic number.

It is not a de Polignac number, because 654526420061 - 2²² = 654522225757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654526422061) 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 as a sum of consecutive naturals, namely, 327263210030 + 327263210031.

It is an arithmetic number, because the mean of its divisors is an integer number (327263210031).

Almost surely, 2^654526420061 is an apocalyptic number.

It is an amenable number.

654526420061 is a deficient number, since it is larger than the sum of its proper divisors (1).

654526420061 is an equidigital number, since it uses as much as digits as its factorization.

654526420061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 654526420061 in words is "six hundred fifty-four billion, five hundred twenty-six million, four hundred twenty thousand, sixty-one".