143426316781 has 6 divisors (see below), whose sum is σ = 157650414446. Its totient is φ = 130387560600.

The previous prime is 143426316757. The next prime is 143426316793. The reversal of 143426316781 is 187613624341.

It can be written as a sum of positive squares in only one way, i.e., 109299666025 + 34126650756 = 330605^2 + 184734^2 .

It is not a de Polignac number, because 143426316781 - 2⁹ = 143426316269 is a prime.

It is a super-2 number, since 2×143426316781² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143426316721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 592670610 + ... + 592670851.

Almost surely, 2^143426316781 is an apocalyptic number.

143426316781 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

143426316781 is a deficient number, since it is larger than the sum of its proper divisors (14224097665).

143426316781 is a wasteful number, since it uses less digits than its factorization.

143426316781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185341483 (or 1185341472 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The spelling of 143426316781 in words is "one hundred forty-three billion, four hundred twenty-six million, three hundred sixteen thousand, seven hundred eighty-one".