201651246611143 has 16 divisors (see below), whose sum is σ = 230570830206720. Its totient is φ = 172759748918400.

The previous prime is 201651246611117. The next prime is 201651246611173. The reversal of 201651246611143 is 341116642156102.

It is not a de Polignac number, because 201651246611143 - 2⁹ = 201651246610631 is a prime.

It is a super-2 number, since 2×201651246611143² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201651246611143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201651246611173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119311423 + ... + 120989743.

It is an arithmetic number, because the mean of its divisors is an integer number (14410676887920).

Almost surely, 2^{201651246611143} is an apocalyptic number.

201651246611143 is a deficient number, since it is larger than the sum of its proper divisors (28919583595577).

201651246611143 is a wasteful number, since it uses less digits than its factorization.

201651246611143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686678.

The product of its (nonzero) digits is 207360, while the sum is 43.

Adding to 201651246611143 its reverse (341116642156102), we get a palindrome (542767888767245).

The spelling of 201651246611143 in words is "two hundred one trillion, six hundred fifty-one billion, two hundred forty-six million, six hundred eleven thousand, one hundred forty-three".