80327507755505 has 4 divisors (see below), whose sum is σ = 96393009306612. Its totient is φ = 64262006204400.

The previous prime is 80327507755489. The next prime is 80327507755513. The reversal of 80327507755505 is 50555770572308.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41307408743056 + 39020099012449 = 6427084^2 + 6246607^2 .

It is not a de Polignac number, because 80327507755505 - 2⁴ = 80327507755489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8032750775546 + ... + 8032750775555.

It is an arithmetic number, because the mean of its divisors is an integer number (24098252326653).

Almost surely, 2^{80327507755505} is an apocalyptic number.

It is an amenable number.

80327507755505 is a deficient number, since it is larger than the sum of its proper divisors (16065501551107).

80327507755505 is a wasteful number, since it uses less digits than its factorization.

80327507755505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16065501551106.

The product of its (nonzero) digits is 51450000, while the sum is 59.

The spelling of 80327507755505 in words is "eighty trillion, three hundred twenty-seven billion, five hundred seven million, seven hundred fifty-five thousand, five hundred five".