5258740135681 has 4 divisors (see below), whose sum is σ = 5258748123072. Its totient is φ = 5258732148292.

The previous prime is 5258740135679. The next prime is 5258740135711. The reversal of 5258740135681 is 1865310478525.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5258740135681 - 2¹ = 5258740135679 is a prime.

It is a super-2 number, since 2×5258740135681² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5258740135631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2907685 + ... + 4355698.

It is an arithmetic number, because the mean of its divisors is an integer number (1314687030768).

Almost surely, 2^{5258740135681} is an apocalyptic number.

It is an amenable number.

5258740135681 is a deficient number, since it is larger than the sum of its proper divisors (7987391).

5258740135681 is an equidigital number, since it uses as much as digits as its factorization.

5258740135681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7987390.

The product of its (nonzero) digits is 8064000, while the sum is 55.

The spelling of 5258740135681 in words is "five trillion, two hundred fifty-eight billion, seven hundred forty million, one hundred thirty-five thousand, six hundred eighty-one".