143966687537 has 2 divisors, whose sum is σ = 143966687538. Its totient is φ = 143966687536.

The previous prime is 143966687411. The next prime is 143966687549. The reversal of 143966687537 is 735786669341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143371278736 + 595408801 = 378644^2 + 24401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143966687537 is a prime.

It is a super-2 number, since 2×143966687537² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (143966687567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71983343768 + 71983343769.

It is an arithmetic number, because the mean of its divisors is an integer number (71983343769).

Almost surely, 2^143966687537 is an apocalyptic number.

It is an amenable number.

143966687537 is a deficient number, since it is larger than the sum of its proper divisors (1).

143966687537 is an equidigital number, since it uses as much as digits as its factorization.

143966687537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 137168640, while the sum is 65.

The spelling of 143966687537 in words is "one hundred forty-three billion, nine hundred sixty-six million, six hundred eighty-seven thousand, five hundred thirty-seven".