81416337 has 8 divisors (see below), whose sum is σ = 108699360. Its totient is φ = 54205440.

The previous prime is 81416327. The next prime is 81416353. The reversal of 81416337 is 73361418.

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

It is not a de Polignac number, because 81416337 - 2⁸ = 81416081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 81416298 and 81416307.

It is not an unprimeable number, because it can be changed into a prime (81416327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15339 + ... + 19952.

It is an arithmetic number, because the mean of its divisors is an integer number (13587420).

Almost surely, 2^81416337 is an apocalyptic number.

It is an amenable number.

81416337 is a deficient number, since it is larger than the sum of its proper divisors (27283023).

81416337 is a wasteful number, since it uses less digits than its factorization.

81416337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36063.

The product of its digits is 12096, while the sum is 33.

The square root of 81416337 is about 9023.1001878512. The cubic root of 81416337 is about 433.4149155406.

The spelling of 81416337 in words is "eighty-one million, four hundred sixteen thousand, three hundred thirty-seven".