85809932486390 has 16 divisors (see below), whose sum is σ = 176523289686432. Its totient is φ = 29420548281024.

The previous prime is 85809932486381. The next prime is 85809932486407. The reversal of 85809932486390 is 9368423990858.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 612928089119 + ... + 612928089258.

It is an arithmetic number, because the mean of its divisors is an integer number (11032705605402).

Almost surely, 2^{85809932486390} is an apocalyptic number.

85809932486390 is an abundant number, since it is smaller than the sum of its proper divisors (90713357200042).

85809932486390 is a wasteful number, since it uses less digits than its factorization.

85809932486390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1225856178391.

The product of its (nonzero) digits is 806215680, while the sum is 74.

The spelling of 85809932486390 in words is "eighty-five trillion, eight hundred nine billion, nine hundred thirty-two million, four hundred eighty-six thousand, three hundred ninety".