540686423601 has 24 divisors (see below), whose sum is σ = 792925717896. Its totient is φ = 354964930560.

The previous prime is 540686423593. The next prime is 540686423603. The reversal of 540686423601 is 106324686045.

540686423601 is a `hidden beast` number, since 5 + 406 + 8 + 6 + 4 + 236 + 0 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 236975213601 + 303711210000 = 486801^2 + 551100^2 .

It is not a de Polignac number, because 540686423601 - 2³ = 540686423593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (540686423603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220800 + ... + 1063073.

It is an arithmetic number, because the mean of its divisors is an integer number (33038571579).

Almost surely, 2^540686423601 is an apocalyptic number.

It is an amenable number.

540686423601 is a deficient number, since it is larger than the sum of its proper divisors (252239294295).

540686423601 is a wasteful number, since it uses less digits than its factorization.

540686423601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284593 (or 1284590 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 540686423601 in words is "five hundred forty billion, six hundred eighty-six million, four hundred twenty-three thousand, six hundred one".