143665635065406 has 16 divisors (see below), whose sum is σ = 288585991837200. Its totient is φ = 47679424737408.

The previous prime is 143665635065401. The next prime is 143665635065431. The reversal of 143665635065406 is 604560536566341.

143665635065406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 143665635065406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143665635065401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52280069611 + ... + 52280072358.

It is an arithmetic number, because the mean of its divisors is an integer number (18036624489825).

Almost surely, 2^{143665635065406} is an apocalyptic number.

143665635065406 is an abundant number, since it is smaller than the sum of its proper divisors (144920356771794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143665635065406 is a wasteful number, since it uses less digits than its factorization.

143665635065406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104560142203.

The product of its (nonzero) digits is 139968000, while the sum is 60.

The spelling of 143665635065406 in words is "one hundred forty-three trillion, six hundred sixty-five billion, six hundred thirty-five million, sixty-five thousand, four hundred six".