81360046 has 16 divisors (see below), whose sum is σ = 123963840. Its totient is φ = 40042080.

The previous prime is 81360029. The next prime is 81360047. The reversal of 81360046 is 64006318.

It is a junction number, because it is equal to n+sod(n) for n = 81359996 and 81360023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81360047) 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, 72280 + ... + 73396.

It is an arithmetic number, because the mean of its divisors is an integer number (7747740).

Almost surely, 2^81360046 is an apocalyptic number.

81360046 is a deficient number, since it is larger than the sum of its proper divisors (42603794).

81360046 is a wasteful number, since it uses less digits than its factorization.

81360046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1659.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 81360046 is about 9019.9803769188. The cubic root of 81360046 is about 433.3150052735.

The spelling of 81360046 in words is "eighty-one million, three hundred sixty thousand, forty-six".