40445445136 has 20 divisors (see below), whose sum is σ = 78961245264. Its totient is φ = 20068349600.

The previous prime is 40445445133. The next prime is 40445445151. The reversal of 40445445136 is 63154454404.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40445445133) 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, 9646150 + ... + 9650341.

Almost surely, 2^40445445136 is an apocalyptic number.

It is an amenable number.

40445445136 is a deficient number, since it is larger than the sum of its proper divisors (38515800128).

40445445136 is a wasteful number, since it uses less digits than its factorization.

40445445136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19296630 (or 19296624 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 40.

The spelling of 40445445136 in words is "forty billion, four hundred forty-five million, four hundred forty-five thousand, one hundred thirty-six".