540661512744 has 64 divisors (see below), whose sum is σ = 1505053742400. Its totient is φ = 179834559552.

The previous prime is 540661512719. The next prime is 540661512751. The reversal of 540661512744 is 447215166045.

540661512744 is a `hidden beast` number, since 5 + 4 + 0 + 6 + 61 + 512 + 74 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 540661512744.

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, 2579067 + ... + 2780810.

It is an arithmetic number, because the mean of its divisors is an integer number (23516464725).

Almost surely, 2^540661512744 is an apocalyptic number.

540661512744 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

540661512744 is an abundant number, since it is smaller than the sum of its proper divisors (964392229656).

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

540661512744 is a wasteful number, since it uses less digits than its factorization.

540661512744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5360359 (or 5360349 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

Adding to 540661512744 its reverse (447215166045), we get a palindrome (987876678789).

The spelling of 540661512744 in words is "five hundred forty billion, six hundred sixty-one million, five hundred twelve thousand, seven hundred forty-four".