27872824357 has 4 divisors (see below), whose sum is σ = 31854656416. Its totient is φ = 23890992300.

The previous prime is 27872824337. The next prime is 27872824373. The reversal of 27872824357 is 75342827872.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 27872824357 - 2¹¹ = 27872822309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27872824298 and 27872824307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27872824337) 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, 1990916019 + ... + 1990916032.

It is an arithmetic number, because the mean of its divisors is an integer number (7963664104).

Almost surely, 2^27872824357 is an apocalyptic number.

It is an amenable number.

27872824357 is a deficient number, since it is larger than the sum of its proper divisors (3981832059).

27872824357 is an equidigital number, since it uses as much as digits as its factorization.

27872824357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3981832058.

The product of its digits is 10536960, while the sum is 55.

The spelling of 27872824357 in words is "twenty-seven billion, eight hundred seventy-two million, eight hundred twenty-four thousand, three hundred fifty-seven".