85621805753 has 8 divisors (see below), whose sum is σ = 98900053920. Its totient is φ = 73259298880.

The previous prime is 85621805693. The next prime is 85621805771. The reversal of 85621805753 is 35750812658.

It is a happy number.

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 85621805753 - 2¹⁰ = 85621804729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85621805053) 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, 228935123 + ... + 228935496.

It is an arithmetic number, because the mean of its divisors is an integer number (12362506740).

Almost surely, 2^85621805753 is an apocalyptic number.

It is an amenable number.

85621805753 is a deficient number, since it is larger than the sum of its proper divisors (13278248167).

85621805753 is a wasteful number, since it uses less digits than its factorization.

85621805753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457870647.

The product of its (nonzero) digits is 2016000, while the sum is 50.

The spelling of 85621805753 in words is "eighty-five billion, six hundred twenty-one million, eight hundred five thousand, seven hundred fifty-three".