40512635812 has 36 divisors (see below), whose sum is σ = 77989888620. Its totient is φ = 18400264960.

The previous prime is 40512635719. The next prime is 40512635819. The reversal of 40512635812 is 21853621504.

It can be written as a sum of positive squares in 2 ways, for example, as 34419896676 + 6092739136 = 185526^2 + 78056^2 .

It is not an unprimeable number, because it can be changed into a prime (40512635819) 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, 591408 + ... + 656344.

It is an arithmetic number, because the mean of its divisors is an integer number (2166385795).

Almost surely, 2^40512635812 is an apocalyptic number.

It is an amenable number.

40512635812 is a deficient number, since it is larger than the sum of its proper divisors (37477252808).

40512635812 is a wasteful number, since it uses less digits than its factorization.

40512635812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66252 (or 66239 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 40512635812 in words is "forty billion, five hundred twelve million, six hundred thirty-five thousand, eight hundred twelve".