654198243291 has 24 divisors (see below), whose sum is σ = 994719557520. Its totient is φ = 413164475136.

The previous prime is 654198243199. The next prime is 654198243331. The reversal of 654198243291 is 192342891456.

It is a happy number.

654198243291 is a `hidden beast` number, since 6 + 5 + 41 + 9 + 82 + 432 + 91 = 666.

It is not a de Polignac number, because 654198243291 - 2⁹ = 654198242779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (654198243791) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10333951 + ... + 10397063.

It is an arithmetic number, because the mean of its divisors is an integer number (41446648230).

Almost surely, 2^654198243291 is an apocalyptic number.

654198243291 is a deficient number, since it is larger than the sum of its proper divisors (340521314229).

654198243291 is a wasteful number, since it uses less digits than its factorization.

654198243291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123755 (or 123752 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The spelling of 654198243291 in words is "six hundred fifty-four billion, one hundred ninety-eight million, two hundred forty-three thousand, two hundred ninety-one".