654557849507 has 2 divisors, whose sum is σ = 654557849508. Its totient is φ = 654557849506.

The previous prime is 654557849479. The next prime is 654557849549. The reversal of 654557849507 is 705948755456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 654557849507 - 2⁶ = 654557849443 is a prime.

It is not a weakly prime, because it can be changed into another prime (654557849557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327278924753 + 327278924754.

It is an arithmetic number, because the mean of its divisors is an integer number (327278924754).

Almost surely, 2^654557849507 is an apocalyptic number.

654557849507 is a deficient number, since it is larger than the sum of its proper divisors (1).

654557849507 is an equidigital number, since it uses as much as digits as its factorization.

654557849507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680000, while the sum is 65.

The spelling of 654557849507 in words is "six hundred fifty-four billion, five hundred fifty-seven million, eight hundred forty-nine thousand, five hundred seven".