81015062 has 16 divisors (see below), whose sum is σ = 128044800. Its totient is φ = 38367912.

The previous prime is 81015061. The next prime is 81015073. The reversal of 81015062 is 26051018.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81015061) 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, 3812 + ... + 13287.

It is an arithmetic number, because the mean of its divisors is an integer number (8002800).

Almost surely, 2^81015062 is an apocalyptic number.

81015062 is a deficient number, since it is larger than the sum of its proper divisors (47029738).

81015062 is a wasteful number, since it uses less digits than its factorization.

81015062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17227.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 81015062 is about 9000.8367388816. The cubic root of 81015062 is about 432.7016881499.

The spelling of 81015062 in words is "eighty-one million, fifteen thousand, sixty-two".