654188242481 has 8 divisors (see below), whose sum is σ = 654424547400. Its totient is φ = 653951991808.

The previous prime is 654188242471. The next prime is 654188242493. The reversal of 654188242481 is 184242881456.

It can be written as a sum of positive squares in 4 ways, for example, as 10896019456 + 643292223025 = 104384^2 + 802055^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-654188242481 is a prime.

It is a super-2 number, since 2×654188242481² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654188242441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55542065 + ... + 55553841.

It is an arithmetic number, because the mean of its divisors is an integer number (81803068425).

Almost surely, 2^654188242481 is an apocalyptic number.

It is an amenable number.

654188242481 is a deficient number, since it is larger than the sum of its proper divisors (236304919).

654188242481 is a wasteful number, since it uses less digits than its factorization.

654188242481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27123.

The product of its digits is 3932160, while the sum is 53.

The spelling of 654188242481 in words is "six hundred fifty-four billion, one hundred eighty-eight million, two hundred forty-two thousand, four hundred eighty-one".