85865321448545 has 8 divisors (see below), whose sum is σ = 103042283403624. Its totient is φ = 68689658715264.

The previous prime is 85865321448539. The next prime is 85865321448553. The reversal of 85865321448545 is 54584412356858.

It can be written as a sum of positive squares in 4 ways, for example, as 6376185562321 + 79489135886224 = 2525111^2 + 8915668^2 .

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 85865321448545 - 2⁴² = 81467274937441 is a prime.

It is a Duffinian 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, 324660044 + ... + 324924413.

It is an arithmetic number, because the mean of its divisors is an integer number (12880285425453).

Almost surely, 2^{85865321448545} is an apocalyptic number.

It is an amenable number.

85865321448545 is a deficient number, since it is larger than the sum of its proper divisors (17176961955079).

85865321448545 is a wasteful number, since it uses less digits than its factorization.

85865321448545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649610899.

The product of its digits is 737280000, while the sum is 68.

The spelling of 85865321448545 in words is "eighty-five trillion, eight hundred sixty-five billion, three hundred twenty-one million, four hundred forty-eight thousand, five hundred forty-five".