80395870378 has 4 divisors (see below), whose sum is σ = 120593805570. Its totient is φ = 40197935188.

The previous prime is 80395870349. The next prime is 80395870453. The reversal of 80395870378 is 87307859308.

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., 58277339649 + 22118530729 = 241407^2 + 148723^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20098967593 + ... + 20098967596.

Almost surely, 2^80395870378 is an apocalyptic number.

80395870378 is a deficient number, since it is larger than the sum of its proper divisors (40197935192).

80395870378 is a wasteful number, since it uses less digits than its factorization.

80395870378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40197935191.

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 80395870378 in words is "eighty billion, three hundred ninety-five million, eight hundred seventy thousand, three hundred seventy-eight".