80693801819 has 4 divisors (see below), whose sum is σ = 84940844040. Its totient is φ = 76446759600.

The previous prime is 80693801803. The next prime is 80693801843. The reversal of 80693801819 is 91810839608.

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 80693801819 - 2⁴ = 80693801803 is a prime.

It is a super-2 number, since 2×80693801819² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80693801899) 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, 2123521082 + ... + 2123521119.

It is an arithmetic number, because the mean of its divisors is an integer number (21235211010).

Almost surely, 2^80693801819 is an apocalyptic number.

80693801819 is a deficient number, since it is larger than the sum of its proper divisors (4247042221).

80693801819 is a wasteful number, since it uses less digits than its factorization.

80693801819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4247042220.

The product of its (nonzero) digits is 746496, while the sum is 53.

The spelling of 80693801819 in words is "eighty billion, six hundred ninety-three million, eight hundred one thousand, eight hundred nineteen".