85221771726 has 64 divisors (see below), whose sum is σ = 211813475328. Its totient is φ = 22257842688.

The previous prime is 85221771697. The next prime is 85221771769. The reversal of 85221771726 is 62717712258.

It is a super-3 number, since 3×85221771726³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 701451 + ... + 813926.

It is an arithmetic number, because the mean of its divisors is an integer number (3309585552).

Almost surely, 2^85221771726 is an apocalyptic number.

85221771726 is an abundant number, since it is smaller than the sum of its proper divisors (126591703602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85221771726 is a wasteful number, since it uses less digits than its factorization.

85221771726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515505.

The product of its digits is 658560, while the sum is 48.

The spelling of 85221771726 in words is "eighty-five billion, two hundred twenty-one million, seven hundred seventy-one thousand, seven hundred twenty-six".