40111531252 has 12 divisors (see below), whose sum is σ = 75594808996. Its totient is φ = 18513014400.

The previous prime is 40111531223. The next prime is 40111531261. The reversal of 40111531252 is 25213511104.

It can be written as a sum of positive squares in 2 ways, for example, as 2567043556 + 37544487696 = 50666^2 + 193764^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385687749 + ... + 385687852.

Almost surely, 2^40111531252 is an apocalyptic number.

It is an amenable number.

40111531252 is a deficient number, since it is larger than the sum of its proper divisors (35483277744).

40111531252 is a wasteful number, since it uses less digits than its factorization.

40111531252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771375618 (or 771375616 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 40111531252 in words is "forty billion, one hundred eleven million, five hundred thirty-one thousand, two hundred fifty-two".