6541106421 has 16 divisors (see below), whose sum is σ = 9404418240. Its totient is φ = 4030462080.

The previous prime is 6541106393. The next prime is 6541106437. The reversal of 6541106421 is 1246011456.

It is not a de Polignac number, because 6541106421 - 2¹⁷ = 6540975349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6541106441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1397130 + ... + 1401803.

It is an arithmetic number, because the mean of its divisors is an integer number (587776140).

Almost surely, 2^6541106421 is an apocalyptic number.

It is an amenable number.

6541106421 is a deficient number, since it is larger than the sum of its proper divisors (2863311819).

6541106421 is a wasteful number, since it uses less digits than its factorization.

6541106421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2798996.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 6541106421 is about 80877.1069030044. The cubic root of 6541106421 is about 1870.1814212920.

Adding to 6541106421 its reverse (1246011456), we get a palindrome (7787117877).

The spelling of 6541106421 in words is "six billion, five hundred forty-one million, one hundred six thousand, four hundred twenty-one".