80509695 has 24 divisors (see below), whose sum is σ = 149847984. Its totient is φ = 36804096.

The previous prime is 80509687. The next prime is 80509721. The reversal of 80509695 is 59690508.

It is not a de Polignac number, because 80509695 - 2³ = 80509687 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54034 + ... + 55503.

It is an arithmetic number, because the mean of its divisors is an integer number (6243666).

Almost surely, 2^80509695 is an apocalyptic number.

80509695 is a deficient number, since it is larger than the sum of its proper divisors (69338289).

80509695 is a wasteful number, since it uses less digits than its factorization.

80509695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109559 (or 109552 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 42.

The square root of 80509695 is about 8972.7194874241. The cubic root of 80509695 is about 431.8000886165.

The spelling of 80509695 in words is "eighty million, five hundred nine thousand, six hundred ninety-five".