85642605653 has 8 divisors (see below), whose sum is σ = 95416133760. Its totient is φ = 76200383680.

The previous prime is 85642605647. The next prime is 85642605689. The reversal of 85642605653 is 35650624658.

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 85642605653 - 2⁴ = 85642605637 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 (85642605053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82825988 + ... + 82827021.

It is an arithmetic number, because the mean of its divisors is an integer number (11927016720).

Almost surely, 2^85642605653 is an apocalyptic number.

It is an amenable number.

85642605653 is a deficient number, since it is larger than the sum of its proper divisors (9773528107).

85642605653 is a wasteful number, since it uses less digits than its factorization.

85642605653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165653067.

The product of its (nonzero) digits is 5184000, while the sum is 50.

The spelling of 85642605653 in words is "eighty-five billion, six hundred forty-two million, six hundred five thousand, six hundred fifty-three".