78145808330205 has 160 divisors (see below), whose sum is σ = 174795183560448. Its totient is φ = 32449123584000.

The previous prime is 78145808330173. The next prime is 78145808330221. The reversal of 78145808330205 is 50203380854187.

78145808330205 is a `hidden beast` number, since 7 + 8 + 1 + 4 + 580 + 8 + 3 + 30 + 20 + 5 = 666.

It is not a de Polignac number, because 78145808330205 - 2⁵ = 78145808330173 is a prime.

It is a super-2 number, since 2×78145808330205² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 36409939 + ... + 38496431.

Almost surely, 2^{78145808330205} is an apocalyptic number.

It is an amenable number.

78145808330205 is an abundant number, since it is smaller than the sum of its proper divisors (96649375230243).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78145808330205 is a wasteful number, since it uses less digits than its factorization.

78145808330205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087729 (or 2087720 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 78145808330205 in words is "seventy-eight trillion, one hundred forty-five billion, eight hundred eight million, three hundred thirty thousand, two hundred five".