40445223232 has 28 divisors (see below), whose sum is σ = 80701930036. Its totient is φ = 20110878720.

The previous prime is 40445223197. The next prime is 40445223233. The reversal of 40445223232 is 23232254404.

It can be written as a sum of positive squares in 2 ways, for example, as 5140316416 + 35304906816 = 71696^2 + 187896^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40445223194 and 40445223203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40445223233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1734153 + ... + 1757320.

It is an arithmetic number, because the mean of its divisors is an integer number (2882211787).

Almost surely, 2^40445223232 is an apocalyptic number.

It is an amenable number.

40445223232 is a deficient number, since it is larger than the sum of its proper divisors (40256706804).

40445223232 is a wasteful number, since it uses less digits than its factorization.

40445223232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3491666 (or 3491656 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 31.

Adding to 40445223232 its reverse (23232254404), we get a palindrome (63677477636).

The spelling of 40445223232 in words is "forty billion, four hundred forty-five million, two hundred twenty-three thousand, two hundred thirty-two".