81013471097 has 8 divisors (see below), whose sum is σ = 87365294016. Its totient is φ = 74678793552.

The previous prime is 81013471057. The next prime is 81013471103. The reversal of 81013471097 is 79017431018.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 81013471097 - 2¹⁰ = 81013470073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81013471037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4276523 + ... + 4295424.

It is an arithmetic number, because the mean of its divisors is an integer number (10920661752).

Almost surely, 2^81013471097 is an apocalyptic number.

It is an amenable number.

81013471097 is a deficient number, since it is larger than the sum of its proper divisors (6351822919).

81013471097 is a wasteful number, since it uses less digits than its factorization.

81013471097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8572687.

The product of its (nonzero) digits is 42336, while the sum is 41.

The spelling of 81013471097 in words is "eighty-one billion, thirteen million, four hundred seventy-one thousand, ninety-seven".