540024451213421 has 4 divisors (see below), whose sum is σ = 543648776389500. Its totient is φ = 536400126037344.

The previous prime is 540024451213397. The next prime is 540024451213451. The reversal of 540024451213421 is 124312154420045.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 296196663433225 + 243827787780196 = 17210365^2 + 15614986^2 .

It is a cyclic number.

It is not a de Polignac number, because 540024451213421 - 2³⁴ = 540007271344237 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 (540024451213451) 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, 1812162587816 + ... + 1812162588113.

It is an arithmetic number, because the mean of its divisors is an integer number (135912194097375).

Almost surely, 2^{540024451213421} is an apocalyptic number.

It is an amenable number.

540024451213421 is a deficient number, since it is larger than the sum of its proper divisors (3624325176079).

540024451213421 is a wasteful number, since it uses less digits than its factorization.

540024451213421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3624325176078.

The product of its (nonzero) digits is 153600, while the sum is 38.

The spelling of 540024451213421 in words is "five hundred forty trillion, twenty-four billion, four hundred fifty-one million, two hundred thirteen thousand, four hundred twenty-one".