80436017985 has 8 divisors (see below), whose sum is σ = 128697628800. Its totient is φ = 42899209584.

The previous prime is 80436017941. The next prime is 80436018017. The reversal of 80436017985 is 58971063408.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80436017985 - 2¹⁰ = 80436016961 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2681200585 + ... + 2681200614.

It is an arithmetic number, because the mean of its divisors is an integer number (16087203600).

Almost surely, 2^80436017985 is an apocalyptic number.

It is an amenable number.

80436017985 is a deficient number, since it is larger than the sum of its proper divisors (48261610815).

80436017985 is a wasteful number, since it uses less digits than its factorization.

80436017985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5362401207.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 80436017985 in words is "eighty billion, four hundred thirty-six million, seventeen thousand, nine hundred eighty-five".