27842752161 has 24 divisors (see below), whose sum is σ = 47664961344. Its totient is φ = 15910143120.

The previous prime is 27842752153. The next prime is 27842752199. The reversal of 27842752161 is 16125724872.

27842752161 is a `hidden beast` number, since 2 + 7 + 8 + 427 + 5 + 216 + 1 = 666.

It is not a de Polignac number, because 27842752161 - 2³ = 27842752153 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (27842752141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8182530 + ... + 8185931.

It is an arithmetic number, because the mean of its divisors is an integer number (1986040056).

Almost surely, 2^27842752161 is an apocalyptic number.

27842752161 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

27842752161 is a deficient number, since it is larger than the sum of its proper divisors (19822209183).

27842752161 is an equidigital number, since it uses as much as digits as its factorization.

27842752161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16368483 (or 16368471 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The spelling of 27842752161 in words is "twenty-seven billion, eight hundred forty-two million, seven hundred fifty-two thousand, one hundred sixty-one".