540985893139 has 4 divisors (see below), whose sum is σ = 549854514400. Its totient is φ = 532117271880.

The previous prime is 540985893127. The next prime is 540985893157. The reversal of 540985893139 is 931398589045.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931398589045 = 5 ⋅186279717809.

It is a cyclic number.

It is not a de Polignac number, because 540985893139 - 2¹¹ = 540985891091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540985893179) 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, 4434310539 + ... + 4434310660.

It is an arithmetic number, because the mean of its divisors is an integer number (137463628600).

Almost surely, 2^540985893139 is an apocalyptic number.

540985893139 is a deficient number, since it is larger than the sum of its proper divisors (8868621261).

540985893139 is an equidigital number, since it uses as much as digits as its factorization.

540985893139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8868621260.

The product of its (nonzero) digits is 41990400, while the sum is 64.

The spelling of 540985893139 in words is "five hundred forty billion, nine hundred eighty-five million, eight hundred ninety-three thousand, one hundred thirty-nine".