85981166386 has 8 divisors (see below), whose sum is σ = 134579217024. Its totient is φ = 41121427380.

The previous prime is 85981166333. The next prime is 85981166399. The reversal of 85981166386 is 68366118958.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 934577850 + ... + 934577941.

It is an arithmetic number, because the mean of its divisors is an integer number (16822402128).

Almost surely, 2^85981166386 is an apocalyptic number.

85981166386 is a deficient number, since it is larger than the sum of its proper divisors (48598050638).

85981166386 is a wasteful number, since it uses less digits than its factorization.

85981166386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869155816.

The product of its digits is 14929920, while the sum is 61.

The spelling of 85981166386 in words is "eighty-five billion, nine hundred eighty-one million, one hundred sixty-six thousand, three hundred eighty-six".