40643230643572 has 6 divisors (see below), whose sum is σ = 71125653626258. Its totient is φ = 20321615321784.

The previous prime is 40643230643527. The next prime is 40643230643581. The reversal of 40643230643572 is 27534603234604.

It can be written as a sum of positive squares in only one way, i.e., 34009494678756 + 6633735964816 = 5831766^2 + 2575604^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5080403830443 + ... + 5080403830450.

Almost surely, 2^{40643230643572} is an apocalyptic number.

It is an amenable number.

40643230643572 is a deficient number, since it is larger than the sum of its proper divisors (30482422982686).

40643230643572 is a wasteful number, since it uses less digits than its factorization.

40643230643572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10160807660897 (or 10160807660895 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 49.

The spelling of 40643230643572 in words is "forty trillion, six hundred forty-three billion, two hundred thirty million, six hundred forty-three thousand, five hundred seventy-two".