80819388479658 has 64 divisors (see below), whose sum is σ = 174961604344320. Its totient is φ = 24791036239872.

The previous prime is 80819388479653. The next prime is 80819388479659. The reversal of 80819388479658 is 85697488391808.

It is not an unprimeable number, because it can be changed into a prime (80819388479653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3516891 + ... + 13191182.

It is an arithmetic number, because the mean of its divisors is an integer number (2733775067880).

Almost surely, 2^{80819388479658} is an apocalyptic number.

80819388479658 is an abundant number, since it is smaller than the sum of its proper divisors (94142215864662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80819388479658 is a wasteful number, since it uses less digits than its factorization.

80819388479658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16709151.

The product of its (nonzero) digits is 6688604160, while the sum is 84.

The spelling of 80819388479658 in words is "eighty trillion, eight hundred nineteen billion, three hundred eighty-eight million, four hundred seventy-nine thousand, six hundred fifty-eight".