4135394689281 has 6 divisors (see below), whose sum is σ = 5973347884530. Its totient is φ = 2756929792848.

The previous prime is 4135394689267. The next prime is 4135394689313. The reversal of 4135394689281 is 1829864935314.

4135394689281 is a `hidden beast` number, since 4 + 1 + 3 + 5 + 3 + 9 + 468 + 92 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2826715888656 + 1308678800625 = 1681284^2 + 1143975^2 .

It is not a de Polignac number, because 4135394689281 - 2²³ = 4135386300673 is a prime.

It is a super-2 number, since 2×4135394689281² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4135394689681) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 229744149396 + ... + 229744149413.

It is an arithmetic number, because the mean of its divisors is an integer number (995557980755).

Almost surely, 2^{4135394689281} is an apocalyptic number.

It is an amenable number.

4135394689281 is a deficient number, since it is larger than the sum of its proper divisors (1837953195249).

4135394689281 is a wasteful number, since it uses less digits than its factorization.

4135394689281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459488298815 (or 459488298812 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 63.

The spelling of 4135394689281 in words is "four trillion, one hundred thirty-five billion, three hundred ninety-four million, six hundred eighty-nine thousand, two hundred eighty-one".