78805082086 has 8 divisors (see below), whose sum is σ = 118960538400. Its totient is φ = 39151569288.

The previous prime is 78805082053. The next prime is 78805082087. The reversal of 78805082086 is 68028050887.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78805082086² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78805082087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125485486 + ... + 125486113.

It is an arithmetic number, because the mean of its divisors is an integer number (14870067300).

Almost surely, 2^78805082086 is an apocalyptic number.

78805082086 is a deficient number, since it is larger than the sum of its proper divisors (40155456314).

78805082086 is a wasteful number, since it uses less digits than its factorization.

78805082086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250971758.

The product of its (nonzero) digits is 1720320, while the sum is 52.

The spelling of 78805082086 in words is "seventy-eight billion, eight hundred five million, eighty-two thousand, eighty-six".