81436083015 has 16 divisors (see below), whose sum is σ = 148911694848. Its totient is φ = 37227923616.

The previous prime is 81436082977. The next prime is 81436083019. The reversal of 81436083015 is 51038063418.

It is not a de Polignac number, because 81436083015 - 2⁹ = 81436082503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81436083019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387790767 + ... + 387790976.

It is an arithmetic number, because the mean of its divisors is an integer number (9306980928).

Almost surely, 2^81436083015 is an apocalyptic number.

81436083015 is a deficient number, since it is larger than the sum of its proper divisors (67475611833).

81436083015 is a wasteful number, since it uses less digits than its factorization.

81436083015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775581758.

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 81436083015 in words is "eighty-one billion, four hundred thirty-six million, eighty-three thousand, fifteen".