540643384554 has 64 divisors (see below), whose sum is σ = 1330903478016. Its totient is φ = 142577731584.

The previous prime is 540643384543. The next prime is 540643384573. The reversal of 540643384554 is 455483346045.

It is a junction number, because it is equal to n+sod(n) for n = 540643384497 and 540643384506.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12436384 + ... + 12479780.

It is an arithmetic number, because the mean of its divisors is an integer number (20795366844).

Almost surely, 2^540643384554 is an apocalyptic number.

540643384554 is an abundant number, since it is smaller than the sum of its proper divisors (790260093462).

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

540643384554 is a wasteful number, since it uses less digits than its factorization.

540643384554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66239.

The product of its (nonzero) digits is 13824000, while the sum is 51.

The spelling of 540643384554 in words is "five hundred forty billion, six hundred forty-three million, three hundred eighty-four thousand, five hundred fifty-four".