654323456787654 has 16 divisors (see below), whose sum is σ = 1308837428567280. Its totient is φ = 218076066430560.

The previous prime is 654323456787643. The next prime is 654323456787683. The reversal of 654323456787654 is 456787654323456.

654323456787654 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a super-2 number, since 2×654323456787654² (a number of 30 digits) contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7938080017 + ... + 7938162444.

It is an arithmetic number, because the mean of its divisors is an integer number (81802339285455).

Almost surely, 2^{654323456787654} is an apocalyptic number.

654323456787654 is an abundant number, since it is smaller than the sum of its proper divisors (654513971779626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

654323456787654 is a wasteful number, since it uses less digits than its factorization.

654323456787654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15876249335.

The product of its digits is 12192768000, while the sum is 75.

The spelling of 654323456787654 in words is "six hundred fifty-four trillion, three hundred twenty-three billion, four hundred fifty-six million, seven hundred eighty-seven thousand, six hundred fifty-four".