6543354636651 has 16 divisors (see below), whose sum is σ = 10292465666048. Its totient is φ = 3618444960000.

The previous prime is 6543354636613. The next prime is 6543354636653. The reversal of 6543354636651 is 1566364533456.

It is not a de Polignac number, because 6543354636651 - 2⁹ = 6543354636139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6543354636591 and 6543354636600.

It is not an unprimeable number, because it can be changed into a prime (6543354636653) 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, 5025617350 + ... + 5025618651.

It is an arithmetic number, because the mean of its divisors is an integer number (643279104128).

Almost surely, 2^{6543354636651} is an apocalyptic number.

6543354636651 is a deficient number, since it is larger than the sum of its proper divisors (3749111029397).

6543354636651 is a wasteful number, since it uses less digits than its factorization.

6543354636651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10051236042.

The product of its digits is 69984000, while the sum is 57.

The spelling of 6543354636651 in words is "six trillion, five hundred forty-three billion, three hundred fifty-four million, six hundred thirty-six thousand, six hundred fifty-one".