143962381481 has 4 divisors (see below), whose sum is σ = 143963552964. Its totient is φ = 143961210000.

The previous prime is 143962381469. The next prime is 143962381489. The reversal of 143962381481 is 184183269341.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 184183269341 = 67619 ⋅2723839.

It can be written as a sum of positive squares in 2 ways, for example, as 135527795881 + 8434585600 = 368141^2 + 91840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143962381481 is a prime.

It is a super-3 number, since 3×143962381481³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (143962381489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376490 + ... + 655491.

It is an arithmetic number, because the mean of its divisors is an integer number (35990888241).

Almost surely, 2^143962381481 is an apocalyptic number.

It is an amenable number.

143962381481 is a deficient number, since it is larger than the sum of its proper divisors (1171483).

143962381481 is a wasteful number, since it uses less digits than its factorization.

143962381481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171482.

The product of its digits is 995328, while the sum is 50.

The spelling of 143962381481 in words is "one hundred forty-three billion, nine hundred sixty-two million, three hundred eighty-one thousand, four hundred eighty-one".