778573525375877 has 32 divisors (see below), whose sum is σ = 976212207360000. Its totient is φ = 603229405147200.

The previous prime is 778573525375847. The next prime is 778573525375951.

778573525375877 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 778573525375877 - 2²⁰ = 778573524327301 is a prime.

It is a Smith number, since the sum of its digits (86) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (778573525375847) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131473352 + ... + 137267582.

It is an arithmetic number, because the mean of its divisors is an integer number (30506631480000).

Almost surely, 2^{778573525375877} is an apocalyptic number.

778573525375877 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

778573525375877 is a deficient number, since it is larger than the sum of its proper divisors (197638681984123).

778573525375877 is a wasteful number, since it uses less digits than its factorization.

778573525375877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5804177.

The product of its digits is 84707280000, while the sum is 86.

The spelling of 778573525375877 in words is "seven hundred seventy-eight trillion, five hundred seventy-three billion, five hundred twenty-five million, three hundred seventy-five thousand, eight hundred seventy-seven".