81474216411 has 8 divisors (see below), whose sum is σ = 124151186944. Its totient is φ = 46556695080.

The previous prime is 81474216409. The next prime is 81474216419. The reversal of 81474216411 is 11461247418.

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

It is not a de Polignac number, because 81474216411 - 2¹ = 81474216409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 81474216411.

It is not an unprimeable number, because it can be changed into a prime (81474216419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1939862275 + ... + 1939862316.

It is an arithmetic number, because the mean of its divisors is an integer number (15518898368).

Almost surely, 2^81474216411 is an apocalyptic number.

81474216411 is a deficient number, since it is larger than the sum of its proper divisors (42676970533).

81474216411 is a wasteful number, since it uses less digits than its factorization.

81474216411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3879724601.

The product of its digits is 43008, while the sum is 39.

The spelling of 81474216411 in words is "eighty-one billion, four hundred seventy-four million, two hundred sixteen thousand, four hundred eleven".