80209779111831 has 16 divisors (see below), whose sum is σ = 107894468883456. Its totient is φ = 52999152345216.

The previous prime is 80209779111821. The next prime is 80209779111887. The reversal of 80209779111831 is 13811197790208.

It is not a de Polignac number, because 80209779111831 - 2⁶ = 80209779111767 is a prime.

It is a super-2 number, since 2×80209779111831² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80209779111821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20524026 + ... + 24117528.

It is an arithmetic number, because the mean of its divisors is an integer number (6743404305216).

Almost surely, 2^{80209779111831} is an apocalyptic number.

80209779111831 is a deficient number, since it is larger than the sum of its proper divisors (27684689771625).

80209779111831 is a wasteful number, since it uses less digits than its factorization.

80209779111831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3659462.

The product of its (nonzero) digits is 1524096, while the sum is 57.

The spelling of 80209779111831 in words is "eighty trillion, two hundred nine billion, seven hundred seventy-nine million, one hundred eleven thousand, eight hundred thirty-one".