81410219485 has 8 divisors (see below), whose sum is σ = 111648301056. Its totient is φ = 55824150480.

The previous prime is 81410219483. The next prime is 81410219489. The reversal of 81410219485 is 58491201418.

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

It is not a de Polignac number, because 81410219485 - 2¹ = 81410219483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81410219483) 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, 1163003101 + ... + 1163003170.

It is an arithmetic number, because the mean of its divisors is an integer number (13956037632).

Almost surely, 2^81410219485 is an apocalyptic number.

It is an amenable number.

81410219485 is a deficient number, since it is larger than the sum of its proper divisors (30238081571).

81410219485 is a wasteful number, since it uses less digits than its factorization.

81410219485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2326006283.

The product of its (nonzero) digits is 92160, while the sum is 43.

The spelling of 81410219485 in words is "eighty-one billion, four hundred ten million, two hundred nineteen thousand, four hundred eighty-five".