40649011456 has 27 divisors (see below), whose sum is σ = 81145677333. Its totient is φ = 20322892800.

The previous prime is 40649011451. The next prime is 40649011463. The reversal of 40649011456 is 65411094604.

The square root of 40649011456 is 201616.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 14014771456 + 26634240000 = 118384^2 + 163200^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40649011451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3219556 + ... + 3232156.

Almost surely, 2^40649011456 is an apocalyptic number.

40649011456 is the 201616-th square number.

It is an amenable number.

40649011456 is a deficient number, since it is larger than the sum of its proper divisors (40496665877).

40649011456 is an frugal number, since it uses more digits than its factorization.

40649011456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25218 (or 12603 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 40649011456 in words is "forty billion, six hundred forty-nine million, eleven thousand, four hundred fifty-six".