80278978558 has 16 divisors (see below), whose sum is σ = 121953631680. Its totient is φ = 39627858816.

The previous prime is 80278978553. The next prime is 80278978609. The reversal of 80278978558 is 85587987208.

It is a junction number, because it is equal to n+sod(n) for n = 80278978493 and 80278978502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80278978553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3194410 + ... + 3219442.

It is an arithmetic number, because the mean of its divisors is an integer number (7622101980).

Almost surely, 2^80278978558 is an apocalyptic number.

80278978558 is a deficient number, since it is larger than the sum of its proper divisors (41674653122).

80278978558 is a wasteful number, since it uses less digits than its factorization.

80278978558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45411.

The product of its (nonzero) digits is 90316800, while the sum is 67.

The spelling of 80278978558 in words is "eighty billion, two hundred seventy-eight million, nine hundred seventy-eight thousand, five hundred fifty-eight".