81234284268 has 24 divisors (see below), whose sum is σ = 192375719872. Its totient is φ = 26673943824.

The previous prime is 81234284251. The next prime is 81234284309. The reversal of 81234284268 is 86248243218.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50518030 + ... + 50519637.

Almost surely, 2^81234284268 is an apocalyptic number.

It is an amenable number.

81234284268 is an abundant number, since it is smaller than the sum of its proper divisors (111141435604).

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

81234284268 is a wasteful number, since it uses less digits than its factorization.

81234284268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101037741 (or 101037739 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 48.

The spelling of 81234284268 in words is "eighty-one billion, two hundred thirty-four million, two hundred eighty-four thousand, two hundred sixty-eight".