78587446886086 has 4 divisors (see below), whose sum is σ = 117881170329132. Its totient is φ = 39293723443042.

The previous prime is 78587446886063. The next prime is 78587446886087. The reversal of 78587446886086 is 68068864478587.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 78587446885994 and 78587446886012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78587446886087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19646861721520 + ... + 19646861721523.

It is an arithmetic number, because the mean of its divisors is an integer number (29470292582283).

Almost surely, 2^{78587446886086} is an apocalyptic number.

78587446886086 is a deficient number, since it is larger than the sum of its proper divisors (39293723443046).

78587446886086 is a wasteful number, since it uses less digits than its factorization.

78587446886086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39293723443045.

The product of its (nonzero) digits is 27745320960, while the sum is 85.

The spelling of 78587446886086 in words is "seventy-eight trillion, five hundred eighty-seven billion, four hundred forty-six million, eight hundred eighty-six thousand, eighty-six".