81088006100 has 36 divisors (see below), whose sum is σ = 176010143484. Its totient is φ = 32426138880.

The previous prime is 81088006081. The next prime is 81088006133. The reversal of 81088006100 is 160088018.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 615933124 + 80472072976 = 24818^2 + 283676^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 252224 + ... + 475176.

Almost surely, 2^81088006100 is an apocalyptic number.

It is an amenable number.

81088006100 is an abundant number, since it is smaller than the sum of its proper divisors (94922137384).

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

81088006100 is a wasteful number, since it uses less digits than its factorization.

81088006100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226604 (or 226597 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 32.

The spelling of 81088006100 in words is "eighty-one billion, eighty-eight million, six thousand, one hundred".