654236440654 has 16 divisors (see below), whose sum is σ = 985972603392. Its totient is φ = 325579553208.

The previous prime is 654236440589. The next prime is 654236440661. The reversal of 654236440654 is 456044632456.

It is a super-2 number, since 2×654236440654² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 654236440598 and 654236440607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1893597 + ... + 2212279.

It is an arithmetic number, because the mean of its divisors is an integer number (61623287712).

Almost surely, 2^654236440654 is an apocalyptic number.

654236440654 is a deficient number, since it is larger than the sum of its proper divisors (331736162738).

654236440654 is a wasteful number, since it uses less digits than its factorization.

654236440654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323511.

The product of its (nonzero) digits is 8294400, while the sum is 49.

The spelling of 654236440654 in words is "six hundred fifty-four billion, two hundred thirty-six million, four hundred forty thousand, six hundred fifty-four".