80723015015 has 32 divisors (see below), whose sum is σ = 104675193216. Its totient is φ = 59611368960.

The previous prime is 80723014993. The next prime is 80723015053. The reversal of 80723015015 is 51051032708.

It is not a de Polignac number, because 80723015015 - 2¹⁶ = 80722949479 is a prime.

It is a super-2 number, since 2×80723015015² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 263237 + ... + 480353.

It is an arithmetic number, because the mean of its divisors is an integer number (3271099788).

Almost surely, 2^80723015015 is an apocalyptic number.

80723015015 is a deficient number, since it is larger than the sum of its proper divisors (23952178201).

80723015015 is a wasteful number, since it uses less digits than its factorization.

80723015015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217259.

The product of its (nonzero) digits is 8400, while the sum is 32.

The spelling of 80723015015 in words is "eighty billion, seven hundred twenty-three million, fifteen thousand, fifteen".