40641568505476 has 9 divisors (see below), whose sum is σ = 71122767197349. Its totient is φ = 20320777877664.

The previous prime is 40641568505471. The next prime is 40641568505501. The reversal of 40641568505476 is 67450586514604.

The square root of 40641568505476 is 6375074.

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., 16571005562500 + 24070562942976 = 4070750^2 + 4906176^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40641568505471) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 11156380 + ... + 14343916.

Almost surely, 2^{40641568505476} is an apocalyptic number.

40641568505476 is the 6375074-th square number.

It is an amenable number.

40641568505476 is a deficient number, since it is larger than the sum of its proper divisors (30481198691873).

40641568505476 is an frugal number, since it uses more digits than its factorization.

40641568505476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6375078 (or 3187539 counting only the distinct ones).

The product of its (nonzero) digits is 96768000, while the sum is 61.

The spelling of 40641568505476 in words is "forty trillion, six hundred forty-one billion, five hundred sixty-eight million, five hundred five thousand, four hundred seventy-six".