80121695 has 4 divisors (see below), whose sum is σ = 96146040. Its totient is φ = 64097352.

The previous prime is 80121647. The next prime is 80121703. The reversal of 80121695 is 59612108.

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

It is a cyclic number.

It is not a de Polignac number, because 80121695 - 2⁸ = 80121439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8012165 + ... + 8012174.

It is an arithmetic number, because the mean of its divisors is an integer number (24036510).

Almost surely, 2^80121695 is an apocalyptic number.

80121695 is a deficient number, since it is larger than the sum of its proper divisors (16024345).

80121695 is a wasteful number, since it uses less digits than its factorization.

80121695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16024344.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 80121695 is about 8951.0722821347. The cubic root of 80121695 is about 431.1053139215.

The spelling of 80121695 in words is "eighty million, one hundred twenty-one thousand, six hundred ninety-five".