6541430356 has 12 divisors (see below), whose sum is σ = 11842244820. Its totient is φ = 3157931840.

The previous prime is 6541430351. The next prime is 6541430369. The reversal of 6541430356 is 6530341456.

It can be written as a sum of positive squares in 2 ways, for example, as 1519440400 + 5021989956 = 38980^2 + 70866^2 .

It is a super-2 number, since 2×6541430356² = 85580622204796573472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6541430351) 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, 28195705 + ... + 28195936.

It is an arithmetic number, because the mean of its divisors is an integer number (986853735).

Almost surely, 2^6541430356 is an apocalyptic number.

It is an amenable number.

6541430356 is a deficient number, since it is larger than the sum of its proper divisors (5300814464).

6541430356 is a wasteful number, since it uses less digits than its factorization.

6541430356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56391674 (or 56391672 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 6541430356 is about 80879.1095153749. The cubic root of 6541430356 is about 1870.2122930936.

Subtracting from 6541430356 its reverse (6530341456), we obtain a square (11088900 = 3330²).

The spelling of 6541430356 in words is "six billion, five hundred forty-one million, four hundred thirty thousand, three hundred fifty-six".