40453565643 has 32 divisors (see below), whose sum is σ = 60339179520. Its totient is φ = 26785905120.

The previous prime is 40453565597. The next prime is 40453565699. The reversal of 40453565643 is 34656535404.

40453565643 is a `hidden beast` number, since 4 + 0 + 45 + 3 + 565 + 6 + 43 = 666.

It is not a de Polignac number, because 40453565643 - 2¹³ = 40453557451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40453565743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3485496 + ... + 3497082.

It is an arithmetic number, because the mean of its divisors is an integer number (1885599360).

Almost surely, 2^40453565643 is an apocalyptic number.

40453565643 is a deficient number, since it is larger than the sum of its proper divisors (19885613877).

40453565643 is a wasteful number, since it uses less digits than its factorization.

40453565643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12464 (or 12458 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 45.

The spelling of 40453565643 in words is "forty billion, four hundred fifty-three million, five hundred sixty-five thousand, six hundred forty-three".