6405521145141 has 4 divisors (see below), whose sum is σ = 8540694860192. Its totient is φ = 4270347430092.

The previous prime is 6405521145061. The next prime is 6405521145203. The reversal of 6405521145141 is 1415411255046.

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 not a de Polignac number, because 6405521145141 - 2¹⁴ = 6405521128757 is a prime.

It is a super-2 number, since 2×6405521145141² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6405521145141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6405521145841) 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, 1067586857521 + ... + 1067586857526.

It is an arithmetic number, because the mean of its divisors is an integer number (2135173715048).

Almost surely, 2^{6405521145141} is an apocalyptic number.

It is an amenable number.

6405521145141 is a deficient number, since it is larger than the sum of its proper divisors (2135173715051).

6405521145141 is a wasteful number, since it uses less digits than its factorization.

6405521145141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2135173715050.

The product of its (nonzero) digits is 96000, while the sum is 39.

The spelling of 6405521145141 in words is "six trillion, four hundred five billion, five hundred twenty-one million, one hundred forty-five thousand, one hundred forty-one".