28477609816319 has 12 divisors (see below), whose sum is σ = 30265632743808. Its totient is φ = 26789759155200.

The previous prime is 28477609816309. The next prime is 28477609816349. The reversal of 28477609816319 is 91361890677482.

It is not a de Polignac number, because 28477609816319 - 2²⁰ = 28477608767743 is a prime.

It is a super-2 number, since 2×28477609816319² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28477609816309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22729202 + ... + 23949359.

It is an arithmetic number, because the mean of its divisors is an integer number (2522136061984).

Almost surely, 2^{28477609816319} is an apocalyptic number.

28477609816319 is a deficient number, since it is larger than the sum of its proper divisors (1788022927489).

28477609816319 is a wasteful number, since it uses less digits than its factorization.

28477609816319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46680706 (or 46680689 counting only the distinct ones).

The product of its (nonzero) digits is 219469824, while the sum is 71.

The spelling of 28477609816319 in words is "twenty-eight trillion, four hundred seventy-seven billion, six hundred nine million, eight hundred sixteen thousand, three hundred nineteen".