143782531680121 has 4 divisors (see below), whose sum is σ = 147668546049892. Its totient is φ = 139896517310352.

The previous prime is 143782531680119. The next prime is 143782531680143. The reversal of 143782531680121 is 121086135287341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 111419403580521 + 32363128099600 = 10555539^2 + 5688860^2 .

It is a cyclic number.

It is not a de Polignac number, because 143782531680121 - 2¹ = 143782531680119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143782531680191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1943007184830 + ... + 1943007184903.

It is an arithmetic number, because the mean of its divisors is an integer number (36917136512473).

Almost surely, 2^{143782531680121} is an apocalyptic number.

It is an amenable number.

143782531680121 is a deficient number, since it is larger than the sum of its proper divisors (3886014369771).

143782531680121 is an equidigital number, since it uses as much as digits as its factorization.

143782531680121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3886014369770.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 143782531680121 in words is "one hundred forty-three trillion, seven hundred eighty-two billion, five hundred thirty-one million, six hundred eighty thousand, one hundred twenty-one".