80421103869 has 4 divisors (see below), whose sum is σ = 107228138496. Its totient is φ = 53614069244.

The previous prime is 80421103849. The next prime is 80421103879. The reversal of 80421103869 is 96830112408.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80421103869 - 2⁵ = 80421103837 is a prime.

It is a super-2 number, since 2×80421103869² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 80421103869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80421103849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13403517309 + ... + 13403517314.

It is an arithmetic number, because the mean of its divisors is an integer number (26807034624).

Almost surely, 2^80421103869 is an apocalyptic number.

It is an amenable number.

80421103869 is a deficient number, since it is larger than the sum of its proper divisors (26807034627).

80421103869 is a wasteful number, since it uses less digits than its factorization.

80421103869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26807034626.

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 80421103869 in words is "eighty billion, four hundred twenty-one million, one hundred three thousand, eight hundred sixty-nine".