80135138 has 8 divisors (see below), whose sum is σ = 120240732. Its totient is φ = 40054896.

The previous prime is 80135131. The next prime is 80135147. The reversal of 80135138 is 83153108.

It can be written as a sum of positive squares in 2 ways, for example, as 62047129 + 18088009 = 7877^2 + 4253^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 80135138.

It is not an unprimeable number, because it can be changed into a prime (80135131) 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 3 ways as a sum of consecutive naturals, for example, 8756 + ... + 15392.

Almost surely, 2^80135138 is an apocalyptic number.

80135138 is a deficient number, since it is larger than the sum of its proper divisors (40105594).

80135138 is a wasteful number, since it uses less digits than its factorization.

80135138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12676.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 80135138 is about 8951.8231662606. The cubic root of 80135138 is about 431.1294231829.

The spelling of 80135138 in words is "eighty million, one hundred thirty-five thousand, one hundred thirty-eight".