540561126031 has 4 divisors (see below), whose sum is σ = 555170886232. Its totient is φ = 525951365832.

The previous prime is 540561125999. The next prime is 540561126073. The reversal of 540561126031 is 130621165045.

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

It is a cyclic number.

It is not a de Polignac number, because 540561126031 - 2⁵ = 540561125999 is a prime.

It is a super-2 number, since 2×540561126031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540561126431) 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, 7304880045 + ... + 7304880118.

It is an arithmetic number, because the mean of its divisors is an integer number (138792721558).

Almost surely, 2^540561126031 is an apocalyptic number.

540561126031 is a deficient number, since it is larger than the sum of its proper divisors (14609760201).

540561126031 is a wasteful number, since it uses less digits than its factorization.

540561126031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14609760200.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 540561126031 in words is "five hundred forty billion, five hundred sixty-one million, one hundred twenty-six thousand, thirty-one".