80802806977945 has 32 divisors (see below), whose sum is σ = 105689796613632. Its totient is φ = 58945491570432.

The previous prime is 80802806977901. The next prime is 80802806977973. The reversal of 80802806977945 is 54977960820808.

It is a cyclic number.

It is not a de Polignac number, because 80802806977945 - 2⁷ = 80802806977817 is a prime.

It is a Duffinian number.

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, 59138919 + ... + 60489811.

It is an arithmetic number, because the mean of its divisors is an integer number (3302806144176).

Almost surely, 2^{80802806977945} is an apocalyptic number.

It is an amenable number.

80802806977945 is a deficient number, since it is larger than the sum of its proper divisors (24886989635687).

80802806977945 is a wasteful number, since it uses less digits than its factorization.

80802806977945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362081.

The product of its (nonzero) digits is 487710720, while the sum is 73.

The spelling of 80802806977945 in words is "eighty trillion, eight hundred two billion, eight hundred six million, nine hundred seventy-seven thousand, nine hundred forty-five".