80378217506 has 8 divisors (see below), whose sum is σ = 124456594944. Its totient is φ = 38892685860.

The previous prime is 80378217503. The next prime is 80378217523. The reversal of 80378217506 is 60571287308.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (80378217503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648211370 + ... + 648211493.

It is an arithmetic number, because the mean of its divisors is an integer number (15557074368).

Almost surely, 2^80378217506 is an apocalyptic number.

80378217506 is a deficient number, since it is larger than the sum of its proper divisors (44078377438).

80378217506 is a wasteful number, since it uses less digits than its factorization.

80378217506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296422896.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 80378217506 in words is "eighty billion, three hundred seventy-eight million, two hundred seventeen thousand, five hundred six".