85809932486391 has 8 divisors (see below), whose sum is σ = 114413330730240. Its totient is φ = 57206577950072.

The previous prime is 85809932486381. The next prime is 85809932486407. The reversal of 85809932486391 is 19368423990858.

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

It is a cyclic number.

It is not a de Polignac number, because 85809932486391 - 2²⁶ = 85809865377527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85809932486351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6032751 + ... + 14422688.

It is an arithmetic number, because the mean of its divisors is an integer number (14301666341280).

Almost surely, 2^{85809932486391} is an apocalyptic number.

85809932486391 is a deficient number, since it is larger than the sum of its proper divisors (28603398243849).

85809932486391 is a wasteful number, since it uses less digits than its factorization.

85809932486391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21853765.

The product of its (nonzero) digits is 806215680, while the sum is 75.

The spelling of 85809932486391 in words is "eighty-five trillion, eight hundred nine billion, nine hundred thirty-two million, four hundred eighty-six thousand, three hundred ninety-one".