78768105841 has 4 divisors (see below), whose sum is σ = 78772962532. Its totient is φ = 78763249152.

The previous prime is 78768105827. The next prime is 78768105851. The reversal of 78768105841 is 14850186787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14850186787 = 47 ⋅315961421.

It can be written as a sum of positive squares in 2 ways, for example, as 60250611600 + 18517494241 = 245460^2 + 136079^2 .

It is a cyclic number.

It is not a de Polignac number, because 78768105841 - 2¹³ = 78768097649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78768105821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2403936 + ... + 2436481.

It is an arithmetic number, because the mean of its divisors is an integer number (19693240633).

Almost surely, 2^78768105841 is an apocalyptic number.

It is an amenable number.

78768105841 is a deficient number, since it is larger than the sum of its proper divisors (4856691).

78768105841 is a wasteful number, since it uses less digits than its factorization.

78768105841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4856690.

The product of its (nonzero) digits is 3010560, while the sum is 55.

The spelling of 78768105841 in words is "seventy-eight billion, seven hundred sixty-eight million, one hundred five thousand, eight hundred forty-one".