540654131640 has 64 divisors (see below), whose sum is σ = 1853671311360. Its totient is φ = 123578087040.

The previous prime is 540654131569. The next prime is 540654131713. The reversal of 540654131640 is 46131456045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321817096 + ... + 321818775.

It is an arithmetic number, because the mean of its divisors is an integer number (28963614240).

Almost surely, 2^540654131640 is an apocalyptic number.

It is an amenable number.

540654131640 is an abundant number, since it is smaller than the sum of its proper divisors (1313017179720).

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

540654131640 is a wasteful number, since it uses less digits than its factorization.

540654131640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643635892 (or 643635888 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

Adding to 540654131640 its reverse (46131456045), we get a palindrome (586785587685).

The spelling of 540654131640 in words is "five hundred forty billion, six hundred fifty-four million, one hundred thirty-one thousand, six hundred forty".