143125781987 has 2 divisors, whose sum is σ = 143125781988. Its totient is φ = 143125781986.

The previous prime is 143125781977. The next prime is 143125781993. The reversal of 143125781987 is 789187521341.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 143125781987 - 2¹⁴ = 143125765603 is a prime.

It is not a weakly prime, because it can be changed into another prime (143125781927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71562890993 + 71562890994.

It is an arithmetic number, because the mean of its divisors is an integer number (71562890994).

Almost surely, 2^143125781987 is an apocalyptic number.

143125781987 is a deficient number, since it is larger than the sum of its proper divisors (1).

143125781987 is an equidigital number, since it uses as much as digits as its factorization.

143125781987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 56.

The spelling of 143125781987 in words is "one hundred forty-three billion, one hundred twenty-five million, seven hundred eighty-one thousand, nine hundred eighty-seven".