77639040543 has 8 divisors (see below), whose sum is σ = 103549886208. Its totient is φ = 51743777624.

The previous prime is 77639040517. The next prime is 77639040547. The reversal of 77639040543 is 34504093677.

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

It is a cyclic number.

It is not a de Polignac number, because 77639040543 - 2⁸ = 77639040287 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77639040492 and 77639040501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77639040547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3884055 + ... + 3903992.

It is an arithmetic number, because the mean of its divisors is an integer number (12943735776).

Almost surely, 2^77639040543 is an apocalyptic number.

77639040543 is a deficient number, since it is larger than the sum of its proper divisors (25910845665).

77639040543 is a wasteful number, since it uses less digits than its factorization.

77639040543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7791373.

The product of its (nonzero) digits is 1905120, while the sum is 48.

The spelling of 77639040543 in words is "seventy-seven billion, six hundred thirty-nine million, forty thousand, five hundred forty-three".