77545454543 has 2 divisors, whose sum is σ = 77545454544. Its totient is φ = 77545454542.

The previous prime is 77545454527. The next prime is 77545454561. The reversal of 77545454543 is 34545454577.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77545454543 - 2⁴ = 77545454527 is a prime.

It is a super-3 number, since 3×77545454543³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77545454563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38772727271 + 38772727272.

It is an arithmetic number, because the mean of its divisors is an integer number (38772727272).

Almost surely, 2^77545454543 is an apocalyptic number.

77545454543 is a deficient number, since it is larger than the sum of its proper divisors (1).

77545454543 is an equidigital number, since it uses as much as digits as its factorization.

77545454543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520000, while the sum is 53.

The spelling of 77545454543 in words is "seventy-seven billion, five hundred forty-five million, four hundred fifty-four thousand, five hundred forty-three".