1144171950861 has 32 divisors (see below), whose sum is σ = 1538345789568. Its totient is φ = 756419051520.

The previous prime is 1144171950743. The next prime is 1144171950863. The reversal of 1144171950861 is 1680591714411.

It is not a de Polignac number, because 1144171950861 - 2¹¹ = 1144171948813 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1144171950861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144171950863) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 284123130 + ... + 284127156.

It is an arithmetic number, because the mean of its divisors is an integer number (48073305924).

Almost surely, 2^{1144171950861} is an apocalyptic number.

It is an amenable number.

1144171950861 is a deficient number, since it is larger than the sum of its proper divisors (394173838707).

1144171950861 is a wasteful number, since it uses less digits than its factorization.

1144171950861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5661.

The product of its (nonzero) digits is 241920, while the sum is 48.

The spelling of 1144171950861 in words is "one trillion, one hundred forty-four billion, one hundred seventy-one million, nine hundred fifty thousand, eight hundred sixty-one".