81414673472 has 28 divisors (see below), whose sum is σ = 176244266256. Its totient is φ = 37006669440.

The previous prime is 81414673471. The next prime is 81414673481. The reversal of 81414673472 is 27437641418.

It is not an unprimeable number, because it can be changed into a prime (81414673471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57822218 + ... + 57823625.

Almost surely, 2^81414673472 is an apocalyptic number.

It is an amenable number.

81414673472 is an abundant number, since it is smaller than the sum of its proper divisors (94829592784).

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

81414673472 is a wasteful number, since it uses less digits than its factorization.

81414673472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115645866 (or 115645856 counting only the distinct ones).

The product of its digits is 903168, while the sum is 47.

The spelling of 81414673472 in words is "eighty-one billion, four hundred fourteen million, six hundred seventy-three thousand, four hundred seventy-two".