32169650881 has 9 divisors (see below), whose sum is σ = 32669164899. Its totient is φ = 31677669144.

The previous prime is 32169650873. The next prime is 32169650917. The reversal of 32169650881 is 18805696123.

The square root of 32169650881 is 179359.

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

It can be written as a sum of positive squares in only one way, i.e., 598047025 + 31571603856 = 24455^2 + 177684^2 .

It is not a de Polignac number, because 32169650881 - 2³ = 32169650873 is a prime.

It is a super-2 number, since 2×32169650881² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32169650831) 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, 12015715 + ... + 12018391.

It is an arithmetic number, because the mean of its divisors is an integer number (3629907211).

Almost surely, 2^32169650881 is an apocalyptic number.

32169650881 is the 179359-th square number.

32169650881 is the 89680-th centered octagonal number.

It is an amenable number.

32169650881 is a deficient number, since it is larger than the sum of its proper divisors (499514018).

32169650881 is an frugal number, since it uses more digits than its factorization.

32169650881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5488 (or 2744 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 49.

Multiplying 32169650881 by its sum of digits (49), we get a square (1576312893169 = 1255513²).

The spelling of 32169650881 in words is "thirty-two billion, one hundred sixty-nine million, six hundred fifty thousand, eight hundred eighty-one".