32781999364 has 9 divisors (see below), whose sum is σ = 57369132597. Its totient is φ = 16390818624.

The previous prime is 32781999361. The next prime is 32781999377. The reversal of 32781999364 is 46399918723.

The square root of 32781999364 is 181058.

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., 32020239364 + 761760000 = 178942^2 + 27600^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32781999361) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 316852 + ... + 407380.

Almost surely, 2^32781999364 is an apocalyptic number.

32781999364 is the 181058-th square number.

It is an amenable number.

32781999364 is a deficient number, since it is larger than the sum of its proper divisors (24587133233).

32781999364 is an frugal number, since it uses more digits than its factorization.

32781999364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181062 (or 90531 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 61.

The spelling of 32781999364 in words is "thirty-two billion, seven hundred eighty-one million, nine hundred ninety-nine thousand, three hundred sixty-four".