78800241378777 has 8 divisors (see below), whose sum is σ = 105067319166240. Its totient is φ = 52533328921920.

The previous prime is 78800241378731. The next prime is 78800241378811. The reversal of 78800241378777 is 77787314200887.

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

It is a de Polignac number, because none of the positive numbers 2^k-78800241378777 is a prime.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (78800241378977) 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, 40216224 + ... + 42130097.

It is an arithmetic number, because the mean of its divisors is an integer number (13133414895780).

Almost surely, 2^{78800241378777} is an apocalyptic number.

It is an amenable number.

78800241378777 is a deficient number, since it is larger than the sum of its proper divisors (26267077787463).

78800241378777 is a wasteful number, since it uses less digits than its factorization.

78800241378777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82665303.

The product of its (nonzero) digits is 206524416, while the sum is 69.

The spelling of 78800241378777 in words is "seventy-eight trillion, eight hundred billion, two hundred forty-one million, three hundred seventy-eight thousand, seven hundred seventy-seven".