27202921472164 has 27 divisors (see below), whose sum is σ = 48738758274507. Its totient is φ = 13284928638744.

The previous prime is 27202921472161. The next prime is 27202921472171. The reversal of 27202921472164 is 46127412920272.

The square root of 27202921472164 is 5215642.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27202921472161) 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, 448514889 + ... + 448575535.

Almost surely, 2^{27202921472164} is an apocalyptic number.

27202921472164 is the 5215642-nd square number.

It is an amenable number.

27202921472164 is a deficient number, since it is larger than the sum of its proper divisors (21535836802343).

27202921472164 is an frugal number, since it uses more digits than its factorization.

27202921472164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121384 (or 60692 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 49.

The spelling of 27202921472164 in words is "twenty-seven trillion, two hundred two billion, nine hundred twenty-one million, four hundred seventy-two thousand, one hundred sixty-four".