85245170661 has 32 divisors (see below), whose sum is σ = 144390452480. Its totient is φ = 48691274688.

The previous prime is 85245170653. The next prime is 85245170663. The reversal of 85245170661 is 16607154258.

85245170661 is a `hidden beast` number, since 8 + 524 + 51 + 70 + 6 + 6 + 1 = 666.

It is not a de Polignac number, because 85245170661 - 2³ = 85245170653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85245170663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 368055 + ... + 553131.

It is an arithmetic number, because the mean of its divisors is an integer number (4512201640).

Almost surely, 2^85245170661 is an apocalyptic number.

It is an amenable number.

85245170661 is a deficient number, since it is larger than the sum of its proper divisors (59145281819).

85245170661 is a wasteful number, since it uses less digits than its factorization.

85245170661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187530 (or 187524 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 85245170661 in words is "eighty-five billion, two hundred forty-five million, one hundred seventy thousand, six hundred sixty-one".