85220006638611 has 16 divisors (see below), whose sum is σ = 122370414473216. Its totient is φ = 52441698671136.

The previous prime is 85220006638601. The next prime is 85220006638661. The reversal of 85220006638611 is 11683660002258.

It is a happy number.

It is not a de Polignac number, because 85220006638611 - 2¹⁵ = 85220006605843 is a prime.

It is a super-2 number, since 2×85220006638611² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85220006638601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27299155 + ... + 30260268.

It is an arithmetic number, because the mean of its divisors is an integer number (7648150904576).

Almost surely, 2^{85220006638611} is an apocalyptic number.

85220006638611 is a deficient number, since it is larger than the sum of its proper divisors (37150407834605).

85220006638611 is a wasteful number, since it uses less digits than its factorization.

85220006638611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57597402.

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 85220006638611 in words is "eighty-five trillion, two hundred twenty billion, six million, six hundred thirty-eight thousand, six hundred eleven".