78805080549 has 24 divisors (see below), whose sum is σ = 127125896352. Its totient is φ = 48495432240.

The previous prime is 78805080547. The next prime is 78805080577. The reversal of 78805080549 is 94508050887.

78805080549 is a `hidden beast` number, since 7 + 8 + 80 + 508 + 0 + 54 + 9 = 666.

It is not a de Polignac number, because 78805080549 - 2¹ = 78805080547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78805080495 and 78805080504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78805080547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12469947 + ... + 12476264.

It is an arithmetic number, because the mean of its divisors is an integer number (5296912348).

Almost surely, 2^78805080549 is an apocalyptic number.

It is an amenable number.

78805080549 is a deficient number, since it is larger than the sum of its proper divisors (48320815803).

78805080549 is a wasteful number, since it uses less digits than its factorization.

78805080549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24946239 (or 24946227 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 54.

The spelling of 78805080549 in words is "seventy-eight billion, eight hundred five million, eighty thousand, five hundred forty-nine".