653543040566 has 32 divisors (see below), whose sum is σ = 1081961562528. Its totient is φ = 294160527360.

The previous prime is 653543040497. The next prime is 653543040569. The reversal of 653543040566 is 665040345356.

It is a self number, because there is not a number n which added to its sum of digits gives 653543040566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653543040569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 260660 + ... + 1172616.

It is an arithmetic number, because the mean of its divisors is an integer number (33811298829).

Almost surely, 2^653543040566 is an apocalyptic number.

653543040566 is a deficient number, since it is larger than the sum of its proper divisors (428418521962).

653543040566 is a wasteful number, since it uses less digits than its factorization.

653543040566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912656.

The product of its (nonzero) digits is 3888000, while the sum is 47.

The spelling of 653543040566 in words is "six hundred fifty-three billion, five hundred forty-three million, forty thousand, five hundred sixty-six".