80018711 has 8 divisors (see below), whose sum is σ = 86325264. Its totient is φ = 73889920.

The previous prime is 80018707. The next prime is 80018759. The reversal of 80018711 is 11781008.

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

It is a cyclic number.

It is not a de Polignac number, because 80018711 - 2² = 80018707 is a prime.

It is a super-2 number, since 2×80018711² = 12805988220203042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80018791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43505 + ... + 45306.

It is an arithmetic number, because the mean of its divisors is an integer number (10790658).

Almost surely, 2^80018711 is an apocalyptic number.

80018711 is a deficient number, since it is larger than the sum of its proper divisors (6306553).

80018711 is a wasteful number, since it uses less digits than its factorization.

80018711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88881.

The product of its (nonzero) digits is 448, while the sum is 26.

The square root of 80018711 is about 8945.3178255443. The cubic root of 80018711 is about 430.9205284106.

Adding to 80018711 its reverse (11781008), we get a palindrome (91799719).

The spelling of 80018711 in words is "eighty million, eighteen thousand, seven hundred eleven".