143681588981 has 16 divisors (see below), whose sum is σ = 167323532544. Its totient is φ = 120819139584.

The previous prime is 143681588927. The next prime is 143681589001. The reversal of 143681588981 is 189885186341.

143681588981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 143681588981 - 2³⁴ = 126501719797 is a prime.

It is a super-2 number, since 2×143681588981² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143681588881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5424536 + ... + 5450958.

It is an arithmetic number, because the mean of its divisors is an integer number (10457720784).

Almost surely, 2^143681588981 is an apocalyptic number.

It is an amenable number.

143681588981 is a deficient number, since it is larger than the sum of its proper divisors (23641943563).

143681588981 is a wasteful number, since it uses less digits than its factorization.

143681588981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41140.

The product of its digits is 13271040, while the sum is 62.

The spelling of 143681588981 in words is "one hundred forty-three billion, six hundred eighty-one million, five hundred eighty-eight thousand, nine hundred eighty-one".