27672222258 has 18 divisors (see below), whose sum is σ = 59958010749. Its totient is φ = 9223838832.

The previous prime is 27672222257. The next prime is 27672222271. The reversal of 27672222258 is 85222227672.

It can be written as a sum of positive squares in 2 ways, for example, as 19284043689 + 8388178569 = 138867^2 + 91587^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=117627.

It is not an unprimeable number, because it can be changed into a prime (27672222251) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 686158 + ... + 725366.

Almost surely, 2^27672222258 is an apocalyptic number.

27672222258 is an abundant number, since it is smaller than the sum of its proper divisors (32285788491).

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

27672222258 is an frugal number, since it uses more digits than its factorization.

27672222258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78426 (or 39214 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The spelling of 27672222258 in words is "twenty-seven billion, six hundred seventy-two million, two hundred twenty-two thousand, two hundred fifty-eight".