85651738228 has 48 divisors (see below), whose sum is σ = 175972253184. Its totient is φ = 35707875840.

The previous prime is 85651738219. The next prime is 85651738273. The reversal of 85651738228 is 82283715658.

It is a super-2 number, since 2×85651738228² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8397900 + ... + 8408092.

It is an arithmetic number, because the mean of its divisors is an integer number (3666088608).

Almost surely, 2^85651738228 is an apocalyptic number.

It is an amenable number.

85651738228 is an abundant number, since it is smaller than the sum of its proper divisors (90320514956).

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

85651738228 is a wasteful number, since it uses less digits than its factorization.

85651738228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18352 (or 18350 counting only the distinct ones).

The product of its digits is 6451200, while the sum is 55.

The spelling of 85651738228 in words is "eighty-five billion, six hundred fifty-one million, seven hundred thirty-eight thousand, two hundred twenty-eight".