80720381265 has 32 divisors (see below), whose sum is σ = 129437675136. Its totient is φ = 42955968000.

The previous prime is 80720381251. The next prime is 80720381303. The reversal of 80720381265 is 56218302708.

It is not a de Polignac number, because 80720381265 - 2⁴ = 80720381249 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14671015 + ... + 14676515.

It is an arithmetic number, because the mean of its divisors is an integer number (4044927348).

Almost surely, 2^80720381265 is an apocalyptic number.

It is an amenable number.

80720381265 is a deficient number, since it is larger than the sum of its proper divisors (48717293871).

80720381265 is a wasteful number, since it uses less digits than its factorization.

80720381265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7489.

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 80720381265 in words is "eighty billion, seven hundred twenty million, three hundred eighty-one thousand, two hundred sixty-five".