78841792441 has 4 divisors (see below), whose sum is σ = 78945396084. Its totient is φ = 78738188800.

The previous prime is 78841792429. The next prime is 78841792481. The reversal of 78841792441 is 14429714887.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14429714887 = 7 ⋅2061387841.

It can be written as a sum of positive squares in 2 ways, for example, as 4146716025 + 74695076416 = 64395^2 + 273304^2 .

It is a cyclic number.

It is not a de Polignac number, because 78841792441 - 2⁵ = 78841792409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78841792481) 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, 51800680 + ... + 51802201.

It is an arithmetic number, because the mean of its divisors is an integer number (19736349021).

Almost surely, 2^78841792441 is an apocalyptic number.

It is an amenable number.

78841792441 is a deficient number, since it is larger than the sum of its proper divisors (103603643).

78841792441 is a wasteful number, since it uses less digits than its factorization.

78841792441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103603642.

The product of its digits is 3612672, while the sum is 55.

The spelling of 78841792441 in words is "seventy-eight billion, eight hundred forty-one million, seven hundred ninety-two thousand, four hundred forty-one".