81375096 has 64 divisors (see below), whose sum is σ = 223027200. Its totient is φ = 24537600.

The previous prime is 81375089. The next prime is 81375097. The reversal of 81375096 is 69057318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81375097) 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, 62985 + ... + 64263.

It is an arithmetic number, because the mean of its divisors is an integer number (3484800).

Almost surely, 2^81375096 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 81375096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111513600).

81375096 is an abundant number, since it is smaller than the sum of its proper divisors (141652104).

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

81375096 is a wasteful number, since it uses less digits than its factorization.

81375096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540 (or 1536 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 81375096 is about 9020.8145973631. The cubic root of 81375096 is about 433.3417218626.

The spelling of 81375096 in words is "eighty-one million, three hundred seventy-five thousand, ninety-six".