143727521369 has 2 divisors, whose sum is σ = 143727521370. Its totient is φ = 143727521368.

The previous prime is 143727521299. The next prime is 143727521407. The reversal of 143727521369 is 963125727341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126960379225 + 16767142144 = 356315^2 + 129488^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143727521369 is a prime.

It is a super-2 number, since 2×143727521369² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (143727521869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71863760684 + 71863760685.

It is an arithmetic number, because the mean of its divisors is an integer number (71863760685).

Almost surely, 2^143727521369 is an apocalyptic number.

It is an amenable number.

143727521369 is a deficient number, since it is larger than the sum of its proper divisors (1).

143727521369 is an equidigital number, since it uses as much as digits as its factorization.

143727521369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 50.

The spelling of 143727521369 in words is "one hundred forty-three billion, seven hundred twenty-seven million, five hundred twenty-one thousand, three hundred sixty-nine".