82872776731 has 4 divisors (see below), whose sum is σ = 83727135352. Its totient is φ = 82018418112.

The previous prime is 82872776699. The next prime is 82872776747. The reversal of 82872776731 is 13767727828.

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 82872776731 - 2⁵ = 82872776699 is a prime.

It is a super-2 number, since 2×82872776731² (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 (82872776131) 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, 427179165 + ... + 427179358.

It is an arithmetic number, because the mean of its divisors is an integer number (20931783838).

Almost surely, 2^82872776731 is an apocalyptic number.

82872776731 is a deficient number, since it is larger than the sum of its proper divisors (854358621).

82872776731 is an equidigital number, since it uses as much as digits as its factorization.

82872776731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854358620.

The product of its digits is 11063808, while the sum is 58.

The spelling of 82872776731 in words is "eighty-two billion, eight hundred seventy-two million, seven hundred seventy-six thousand, seven hundred thirty-one".