40212164740 has 36 divisors (see below), whose sum is σ = 92820316428. Its totient is φ = 14622604480.

The previous prime is 40212164723. The next prime is 40212164749. The reversal of 40212164740 is 4746121204.

It can be written as a sum of positive squares in 2 ways, for example, as 4648239684 + 35563925056 = 68178^2 + 188584^2 .

It is not an unprimeable number, because it can be changed into a prime (40212164749) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8305879 + ... + 8310718.

It is an arithmetic number, because the mean of its divisors is an integer number (2578342123).

Almost surely, 2^40212164740 is an apocalyptic number.

It is an amenable number.

40212164740 is an abundant number, since it is smaller than the sum of its proper divisors (52608151688).

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

40212164740 is a wasteful number, since it uses less digits than its factorization.

40212164740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16616628 (or 16616615 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

Adding to 40212164740 its reverse (4746121204), we get a palindrome (44958285944).

The spelling of 40212164740 in words is "forty billion, two hundred twelve million, one hundred sixty-four thousand, seven hundred forty".