80145045 has 24 divisors (see below), whose sum is σ = 144065376. Its totient is φ = 42743376.

The previous prime is 80145029. The next prime is 80145047. The reversal of 80145045 is 54054108.

It is not a de Polignac number, because 80145045 - 2⁴ = 80145029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80145047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31767 + ... + 34196.

It is an arithmetic number, because the mean of its divisors is an integer number (6002724).

Almost surely, 2^80145045 is an apocalyptic number.

It is an amenable number.

80145045 is a deficient number, since it is larger than the sum of its proper divisors (63920331).

80145045 is an equidigital number, since it uses as much as digits as its factorization.

80145045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65983 (or 65971 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 80145045 is about 8952.3765001255. The cubic root of 80145045 is about 431.1471891022.

The spelling of 80145045 in words is "eighty million, one hundred forty-five thousand, forty-five".