4005134144261 has 4 divisors (see below), whose sum is σ = 4240730270412. Its totient is φ = 3769538018112.

The previous prime is 4005134144213. The next prime is 4005134144267. The reversal of 4005134144261 is 1624414315004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1074292863361 + 2930841280900 = 1036481^2 + 1711970^2 .

It is a cyclic number.

It is not a de Polignac number, because 4005134144261 - 2¹⁸ = 4005133882117 is a prime.

It is a super-2 number, since 2×4005134144261² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4005134144267) 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, 117798063050 + ... + 117798063083.

It is an arithmetic number, because the mean of its divisors is an integer number (1060182567603).

Almost surely, 2^{4005134144261} is an apocalyptic number.

It is an amenable number.

4005134144261 is a deficient number, since it is larger than the sum of its proper divisors (235596126151).

4005134144261 is a wasteful number, since it uses less digits than its factorization.

4005134144261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235596126150.

The product of its (nonzero) digits is 46080, while the sum is 35.

Adding to 4005134144261 its reverse (1624414315004), we get a palindrome (5629548459265).

The spelling of 4005134144261 in words is "four trillion, five billion, one hundred thirty-four million, one hundred forty-four thousand, two hundred sixty-one".