42443403657578 has 64 divisors (see below), whose sum is σ = 81326059105536. Its totient is φ = 16130006016000.

The previous prime is 42443403657533. The next prime is 42443403657587. The reversal of 42443403657578 is 87575630434424.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42443403657578.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32810738 + ... + 34079778.

It is an arithmetic number, because the mean of its divisors is an integer number (1270719673524).

Almost surely, 2^{42443403657578} is an apocalyptic number.

42443403657578 is a deficient number, since it is larger than the sum of its proper divisors (38882655447958).

42443403657578 is a wasteful number, since it uses less digits than its factorization.

42443403657578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274399.

The product of its (nonzero) digits is 270950400, while the sum is 62.

The spelling of 42443403657578 in words is "forty-two trillion, four hundred forty-three billion, four hundred three million, six hundred fifty-seven thousand, five hundred seventy-eight".