27172161210 has 32 divisors (see below), whose sum is σ = 65219015232. Its totient is φ = 7245262080.

The previous prime is 27172161209. The next prime is 27172161217. The reversal of 27172161210 is 1216127172.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (27172161217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368562 + ... + 436098.

It is an arithmetic number, because the mean of its divisors is an integer number (2038094226).

Almost surely, 2^27172161210 is an apocalyptic number.

27172161210 is an abundant number, since it is smaller than the sum of its proper divisors (38046854022).

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

27172161210 is a wasteful number, since it uses less digits than its factorization.

27172161210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80958.

The product of its (nonzero) digits is 2352, while the sum is 30.

Adding to 27172161210 its reverse (1216127172), we get a palindrome (28388288382).

The spelling of 27172161210 in words is "twenty-seven billion, one hundred seventy-two million, one hundred sixty-one thousand, two hundred ten".