78617115527543 has 8 divisors (see below), whose sum is σ = 80535305982096. Its totient is φ = 76698958398400.

The previous prime is 78617115527521. The next prime is 78617115527579. The reversal of 78617115527543 is 34572551171687.

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

It is not a de Polignac number, because 78617115527543 - 2⁶ = 78617115527479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78617115527593) 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, 3522188 + ... + 13024593.

It is an arithmetic number, because the mean of its divisors is an integer number (10066913247762).

Almost surely, 2^{78617115527543} is an apocalyptic number.

78617115527543 is a deficient number, since it is larger than the sum of its proper divisors (1918190454553).

78617115527543 is a wasteful number, since it uses less digits than its factorization.

78617115527543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16662705.

The product of its digits is 49392000, while the sum is 62.

The spelling of 78617115527543 in words is "seventy-eight trillion, six hundred seventeen billion, one hundred fifteen million, five hundred twenty-seven thousand, five hundred forty-three".