540961240721 has 16 divisors (see below), whose sum is σ = 605122126848. Its totient is φ = 479440147200.

The previous prime is 540961240711. The next prime is 540961240733. The reversal of 540961240721 is 127042169045.

It is a cyclic number.

It is not a de Polignac number, because 540961240721 - 2¹⁴ = 540961224337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540961240711) 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, 3491441 + ... + 3643086.

It is an arithmetic number, because the mean of its divisors is an integer number (37820132928).

Almost surely, 2^540961240721 is an apocalyptic number.

It is an amenable number.

540961240721 is a deficient number, since it is larger than the sum of its proper divisors (64160886127).

540961240721 is a wasteful number, since it uses less digits than its factorization.

540961240721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7134712.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 540961240721 in words is "five hundred forty billion, nine hundred sixty-one million, two hundred forty thousand, seven hundred twenty-one".