72869582671 has 4 divisors (see below), whose sum is σ = 72876799744. Its totient is φ = 72862365600.

The previous prime is 72869582647. The next prime is 72869582677. The reversal of 72869582671 is 17628596827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17628596827 = 1801 ⋅9788227.

It is a cyclic number.

It is not a de Polignac number, because 72869582671 - 2⁷ = 72869582543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72869582677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3593370 + ... + 3613591.

It is an arithmetic number, because the mean of its divisors is an integer number (18219199936).

Almost surely, 2^72869582671 is an apocalyptic number.

72869582671 is a deficient number, since it is larger than the sum of its proper divisors (7217073).

72869582671 is a wasteful number, since it uses less digits than its factorization.

72869582671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7217072.

The product of its digits is 20321280, while the sum is 61.

The spelling of 72869582671 in words is "seventy-two billion, eight hundred sixty-nine million, five hundred eighty-two thousand, six hundred seventy-one".