27857275872 has 48 divisors (see below), whose sum is σ = 73260652752. Its totient is φ = 9268577280.

The previous prime is 27857275841. The next prime is 27857275877.

It is a happy number.

27857275872 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27857275877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216253 + ... + 320124.

It is an arithmetic number, because the mean of its divisors is an integer number (1526263599).

Almost surely, 2^27857275872 is an apocalyptic number.

It is an amenable number.

27857275872 is an abundant number, since it is smaller than the sum of its proper divisors (45403376880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27857275872 is a wasteful number, since it uses less digits than its factorization.

27857275872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536931 (or 536923 counting only the distinct ones).

The product of its digits is 30732800, while the sum is 60.

The spelling of 27857275872 in words is "twenty-seven billion, eight hundred fifty-seven million, two hundred seventy-five thousand, eight hundred seventy-two".