80111078 has 4 divisors (see below), whose sum is σ = 120166620. Its totient is φ = 40055538.

The previous prime is 80111071. The next prime is 80111111. The reversal of 80111078 is 87011108.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80111071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20027768 + ... + 20027771.

It is an arithmetic number, because the mean of its divisors is an integer number (30041655).

Almost surely, 2^80111078 is an apocalyptic number.

80111078 is a deficient number, since it is larger than the sum of its proper divisors (40055542).

80111078 is a wasteful number, since it uses less digits than its factorization.

80111078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40055541.

The product of its (nonzero) digits is 448, while the sum is 26.

The square root of 80111078 is about 8950.4792050482. The cubic root of 80111078 is about 431.0862710256.

The spelling of 80111078 in words is "eighty million, one hundred eleven thousand, seventy-eight".