540021431113251 has 8 divisors (see below), whose sum is σ = 732232448967360. Its totient is φ = 353912350333992.

The previous prime is 540021431113247. The next prime is 540021431113261. The reversal of 540021431113251 is 152311134120045.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 540021431113251 - 2² = 540021431113247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (540021431113211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1525484268505 + ... + 1525484268858.

It is an arithmetic number, because the mean of its divisors is an integer number (91529056120920).

Almost surely, 2^{540021431113251} is an apocalyptic number.

540021431113251 is a deficient number, since it is larger than the sum of its proper divisors (192211017854109).

540021431113251 is a wasteful number, since it uses less digits than its factorization.

540021431113251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3050968537425.

The product of its (nonzero) digits is 14400, while the sum is 33.

Adding to 540021431113251 its reverse (152311134120045), we get a palindrome (692332565233296).

The spelling of 540021431113251 in words is "five hundred forty trillion, twenty-one billion, four hundred thirty-one million, one hundred thirteen thousand, two hundred fifty-one".