80878786346 has 4 divisors (see below), whose sum is σ = 121318179522. Its totient is φ = 40439393172.

The previous prime is 80878786321. The next prime is 80878786357. The reversal of 80878786346 is 64368787808.

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., 54533925625 + 26344860721 = 233525^2 + 162311^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20219696585 + ... + 20219696588.

Almost surely, 2^80878786346 is an apocalyptic number.

80878786346 is a deficient number, since it is larger than the sum of its proper divisors (40439393176).

80878786346 is a wasteful number, since it uses less digits than its factorization.

80878786346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40439393175.

The product of its (nonzero) digits is 86704128, while the sum is 65.

The spelling of 80878786346 in words is "eighty billion, eight hundred seventy-eight million, seven hundred eighty-six thousand, three hundred forty-six".