80825557507805 has 16 divisors (see below), whose sum is σ = 106309462298688. Its totient is φ = 58503634896000.

The previous prime is 80825557507789. The next prime is 80825557507813. The reversal of 80825557507805 is 50870575552808.

It is not a de Polignac number, because 80825557507805 - 2⁴ = 80825557507789 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3482347616 + ... + 3482370825.

It is an arithmetic number, because the mean of its divisors is an integer number (6644341393668).

Almost surely, 2^{80825557507805} is an apocalyptic number.

It is an amenable number.

80825557507805 is a deficient number, since it is larger than the sum of its proper divisors (25483904790883).

80825557507805 is a wasteful number, since it uses less digits than its factorization.

80825557507805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6964718668.

The product of its (nonzero) digits is 156800000, while the sum is 65.

The spelling of 80825557507805 in words is "eighty trillion, eight hundred twenty-five billion, five hundred fifty-seven million, five hundred seven thousand, eight hundred five".