78848492771 has 4 divisors (see below), whose sum is σ = 78901095000. Its totient is φ = 78795890544.

The previous prime is 78848492759. The next prime is 78848492791. The reversal of 78848492771 is 17729484887.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78848492771 - 2³⁰ = 77774750947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78848492698 and 78848492707.

It is not an unprimeable number, because it can be changed into a prime (78848492731) 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 in 3 ways as a sum of consecutive naturals, for example, 26298866 + ... + 26301863.

It is an arithmetic number, because the mean of its divisors is an integer number (19725273750).

Almost surely, 2^78848492771 is an apocalyptic number.

78848492771 is a deficient number, since it is larger than the sum of its proper divisors (52602229).

78848492771 is a wasteful number, since it uses less digits than its factorization.

78848492771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52602228.

The product of its digits is 50577408, while the sum is 65.

The spelling of 78848492771 in words is "seventy-eight billion, eight hundred forty-eight million, four hundred ninety-two thousand, seven hundred seventy-one".