80111943 has 8 divisors (see below), whose sum is σ = 118684400. Its totient is φ = 53407944.

The previous prime is 80111917. The next prime is 80111947. The reversal of 80111943 is 34911108.

It is not a de Polignac number, because 80111943 - 2⁸ = 80111687 is a prime.

It is a super-2 number, since 2×80111943² = 12835846822470498, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2967109 = 80111943 / (8 + 0 + 1 + 1 + 1 + 9 + 4 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80111947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1483528 + ... + 1483581.

It is an arithmetic number, because the mean of its divisors is an integer number (14835550).

Almost surely, 2^80111943 is an apocalyptic number.

80111943 is a deficient number, since it is larger than the sum of its proper divisors (38572457).

80111943 is a wasteful number, since it uses less digits than its factorization.

80111943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967118 (or 2967112 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 80111943 is about 8950.5275263528. The cubic root of 80111943 is about 431.0878225725.

The spelling of 80111943 in words is "eighty million, one hundred eleven thousand, nine hundred forty-three".