1201285345943 has 32 divisors (see below), whose sum is σ = 1313346908160. Its totient is φ = 1094550589440.

The previous prime is 1201285345877. The next prime is 1201285345961. The reversal of 1201285345943 is 3495435821021.

It is a cyclic number.

It is not a de Polignac number, because 1201285345943 - 2²² = 1201281151639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201285345963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18023303 + ... + 18089831.

It is an arithmetic number, because the mean of its divisors is an integer number (41042090880).

Almost surely, 2^{1201285345943} is an apocalyptic number.

1201285345943 is a deficient number, since it is larger than the sum of its proper divisors (112061562217).

1201285345943 is a wasteful number, since it uses less digits than its factorization.

1201285345943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66887.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 1201285345943 in words is "one trillion, two hundred one billion, two hundred eighty-five million, three hundred forty-five thousand, nine hundred forty-three".