85218139058378 has 8 divisors (see below), whose sum is σ = 127827887637540. Its totient is φ = 42608843179200.

The previous prime is 85218139058369. The next prime is 85218139058401. The reversal of 85218139058378 is 87385093181258.

It can be written as a sum of positive squares in 2 ways, for example, as 77291228320849 + 7926910737529 = 8791543^2 + 2815477^2 .

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

It is an unprimeable number.

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, 112703993 + ... + 113457596.

Almost surely, 2^{85218139058378} is an apocalyptic number.

85218139058378 is a deficient number, since it is larger than the sum of its proper divisors (42609748579162).

85218139058378 is a wasteful number, since it uses less digits than its factorization.

85218139058378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226349992.

The product of its (nonzero) digits is 116121600, while the sum is 68.

The spelling of 85218139058378 in words is "eighty-five trillion, two hundred eighteen billion, one hundred thirty-nine million, fifty-eight thousand, three hundred seventy-eight".