540041361621 has 16 divisors (see below), whose sum is σ = 758418777600. Its totient is φ = 340869059568.

The previous prime is 540041361617. The next prime is 540041361641. The reversal of 540041361621 is 126163140045.

It is not a de Polignac number, because 540041361621 - 2² = 540041361617 is a prime.

It is a super-2 number, since 2×540041361621² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540041361611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2818881 + ... + 3004358.

It is an arithmetic number, because the mean of its divisors is an integer number (47401173600).

Almost surely, 2^540041361621 is an apocalyptic number.

It is an amenable number.

540041361621 is a deficient number, since it is larger than the sum of its proper divisors (218377415979).

540041361621 is a wasteful number, since it uses less digits than its factorization.

540041361621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5824888.

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 540041361621 in words is "five hundred forty billion, forty-one million, three hundred sixty-one thousand, six hundred twenty-one".