143172906269 has 2 divisors, whose sum is σ = 143172906270. Its totient is φ = 143172906268.

The previous prime is 143172906139. The next prime is 143172906343. The reversal of 143172906269 is 962609271341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79031265625 + 64141640644 = 281125^2 + 253262^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143172906269 is a prime.

It is a super-2 number, since 2×143172906269² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (143172908269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71586453134 + 71586453135.

It is an arithmetic number, because the mean of its divisors is an integer number (71586453135).

Almost surely, 2^143172906269 is an apocalyptic number.

It is an amenable number.

143172906269 is a deficient number, since it is larger than the sum of its proper divisors (1).

143172906269 is an equidigital number, since it uses as much as digits as its factorization.

143172906269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 143172906269 in words is "one hundred forty-three billion, one hundred seventy-two million, nine hundred six thousand, two hundred sixty-nine".