78508206445 has 16 divisors (see below), whose sum is σ = 94472147520. Its totient is φ = 62631805824.

The previous prime is 78508206419. The next prime is 78508206451. The reversal of 78508206445 is 54460280587.

It is a cyclic number.

It is not a de Polignac number, because 78508206445 - 2⁷ = 78508206317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9294394 + ... + 9302836.

It is an arithmetic number, because the mean of its divisors is an integer number (5904509220).

Almost surely, 2^78508206445 is an apocalyptic number.

It is an amenable number.

78508206445 is a deficient number, since it is larger than the sum of its proper divisors (15963941075).

78508206445 is a wasteful number, since it uses less digits than its factorization.

78508206445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13404.

The product of its (nonzero) digits is 2150400, while the sum is 49.

The spelling of 78508206445 in words is "seventy-eight billion, five hundred eight million, two hundred six thousand, four hundred forty-five".