80206208378 has 4 divisors (see below), whose sum is σ = 120309312570. Its totient is φ = 40103104188.

The previous prime is 80206208323. The next prime is 80206208387. The reversal of 80206208378 is 87380260208.

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

It can be written as a sum of positive squares in only one way, i.e., 42631099729 + 37575108649 = 206473^2 + 193843^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20051552093 + ... + 20051552096.

Almost surely, 2^80206208378 is an apocalyptic number.

80206208378 is a deficient number, since it is larger than the sum of its proper divisors (40103104192).

80206208378 is a wasteful number, since it uses less digits than its factorization.

80206208378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40103104191.

The product of its (nonzero) digits is 258048, while the sum is 44.

The spelling of 80206208378 in words is "eighty billion, two hundred six million, two hundred eight thousand, three hundred seventy-eight".