77136523543 has 16 divisors (see below), whose sum is σ = 81855470592. Its totient is φ = 72569880000.

The previous prime is 77136523531. The next prime is 77136523573. The reversal of 77136523543 is 34532563177.

It is a cyclic number.

It is not a de Polignac number, because 77136523543 - 2⁵ = 77136523511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77136523493 and 77136523502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77136523573) 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, 252468 + ... + 466918.

It is an arithmetic number, because the mean of its divisors is an integer number (5115966912).

Almost surely, 2^77136523543 is an apocalyptic number.

77136523543 is a deficient number, since it is larger than the sum of its proper divisors (4718947049).

77136523543 is a wasteful number, since it uses less digits than its factorization.

77136523543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214806.

The product of its digits is 1587600, while the sum is 46.

The spelling of 77136523543 in words is "seventy-seven billion, one hundred thirty-six million, five hundred twenty-three thousand, five hundred forty-three".