85622434721 has 8 divisors (see below), whose sum is σ = 89212166400. Its totient is φ = 82075185360.

The previous prime is 85622434699. The next prime is 85622434763. The reversal of 85622434721 is 12743422658.

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 85622434721 - 2¹⁴ = 85622418337 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85622434321) 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, 10616465 + ... + 10624526.

It is an arithmetic number, because the mean of its divisors is an integer number (11151520800).

Almost surely, 2^85622434721 is an apocalyptic number.

It is an amenable number.

85622434721 is a deficient number, since it is larger than the sum of its proper divisors (3589731679).

85622434721 is a wasteful number, since it uses less digits than its factorization.

85622434721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21241159.

The product of its digits is 645120, while the sum is 44.

The spelling of 85622434721 in words is "eighty-five billion, six hundred twenty-two million, four hundred thirty-four thousand, seven hundred twenty-one".