540006644653 has 4 divisors (see below), whose sum is σ = 617150451040. Its totient is φ = 462862838268.

The previous prime is 540006644633. The next prime is 540006644657. The reversal of 540006644653 is 356446600045.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 540006644653 - 2³⁷ = 402567691181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540006644657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38571903183 + ... + 38571903196.

It is an arithmetic number, because the mean of its divisors is an integer number (154287612760).

Almost surely, 2^540006644653 is an apocalyptic number.

It is an amenable number.

540006644653 is a deficient number, since it is larger than the sum of its proper divisors (77143806387).

540006644653 is an equidigital number, since it uses as much as digits as its factorization.

540006644653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77143806386.

The product of its (nonzero) digits is 1036800, while the sum is 43.

The spelling of 540006644653 in words is "five hundred forty billion, six million, six hundred forty-four thousand, six hundred fifty-three".