85778488487758 has 48 divisors (see below), whose sum is σ = 141538420856448. Its totient is φ = 38959838891600.

The previous prime is 85778488487737. The next prime is 85778488487773.

85778488487758 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1732069185 + ... + 1732118707.

It is an arithmetic number, because the mean of its divisors is an integer number (2948717101176).

Almost surely, 2^{85778488487758} is an apocalyptic number.

85778488487758 is a deficient number, since it is larger than the sum of its proper divisors (55759932368690).

85778488487758 is a wasteful number, since it uses less digits than its factorization.

85778488487758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54981 (or 54970 counting only the distinct ones).

The product of its digits is 251763097600, while the sum is 94.

The spelling of 85778488487758 in words is "eighty-five trillion, seven hundred seventy-eight billion, four hundred eighty-eight million, four hundred eighty-seven thousand, seven hundred fifty-eight".