6543454402 has 8 divisors (see below), whose sum is σ = 9815529276. Its totient is φ = 3271611312.

The previous prime is 6543454399. The next prime is 6543454427. The reversal of 6543454402 is 2044543456.

It can be written as a sum of positive squares in 2 ways, for example, as 6525569961 + 17884441 = 80781^2 + 4229^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×6543454402² = 85633591022106355208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63748 + ... + 130960.

Almost surely, 2^6543454402 is an apocalyptic number.

6543454402 is a deficient number, since it is larger than the sum of its proper divisors (3272074874).

6543454402 is a wasteful number, since it uses less digits than its factorization.

6543454402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115892.

The product of its (nonzero) digits is 230400, while the sum is 37.

The square root of 6543454402 is about 80891.6213337327. The cubic root of 6543454402 is about 1870.4051665757.

Adding to 6543454402 its reverse (2044543456), we get a palindrome (8587997858).

The spelling of 6543454402 in words is "six billion, five hundred forty-three million, four hundred fifty-four thousand, four hundred two".