6477543551 has 2 divisors, whose sum is σ = 6477543552. Its totient is φ = 6477543550.

The previous prime is 6477543539. The next prime is 6477543571. The reversal of 6477543551 is 1553457746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6477543551 - 2⁶ = 6477543487 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6477543496 and 6477543505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6477543571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3238771775 + 3238771776.

It is an arithmetic number, because the mean of its divisors is an integer number (3238771776).

Almost surely, 2^6477543551 is an apocalyptic number.

6477543551 is a deficient number, since it is larger than the sum of its proper divisors (1).

6477543551 is an equidigital number, since it uses as much as digits as its factorization.

6477543551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1764000, while the sum is 47.

The square root of 6477543551 is about 80483.1880022157. The cubic root of 6477543551 is about 1864.1038948419.

The spelling of 6477543551 in words is "six billion, four hundred seventy-seven million, five hundred forty-three thousand, five hundred fifty-one".