143986745261 has 2 divisors, whose sum is σ = 143986745262. Its totient is φ = 143986745260.

The previous prime is 143986745179. The next prime is 143986745321. The reversal of 143986745261 is 162547689341.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122233445161 + 21753300100 = 349619^2 + 147490^2 .

It is a cyclic number.

It is not a de Polignac number, because 143986745261 - 2²⁶ = 143919636397 is a prime.

It is a super-2 number, since 2×143986745261² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 143986745197 and 143986745206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143986765261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71993372630 + 71993372631.

It is an arithmetic number, because the mean of its divisors is an integer number (71993372631).

Almost surely, 2^143986745261 is an apocalyptic number.

It is an amenable number.

143986745261 is a deficient number, since it is larger than the sum of its proper divisors (1).

143986745261 is an equidigital number, since it uses as much as digits as its factorization.

143986745261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8709120, while the sum is 56.

The spelling of 143986745261 in words is "one hundred forty-three billion, nine hundred eighty-six million, seven hundred forty-five thousand, two hundred sixty-one".