73143743401 has 3 divisors (see below), whose sum is σ = 73144013853. Its totient is φ = 73143472950.

The previous prime is 73143743377. The next prime is 73143743423. The reversal of 73143743401 is 10434734137.

The square root of 73143743401 is 270451.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10434734137 = 31 ⋅336604327.

It is not a de Polignac number, because 73143743401 - 2¹⁹ = 73143219113 is a prime.

It is a super-2 number, since 2×73143743401² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73143743461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 135226 + ... + 405676.

It is an arithmetic number, because the mean of its divisors is an integer number (24381337951).

Almost surely, 2^73143743401 is an apocalyptic number.

73143743401 is the 270451-st square number.

73143743401 is the 135226-th centered octagonal number.

It is an amenable number.

73143743401 is a deficient number, since it is larger than the sum of its proper divisors (270452).

73143743401 is an frugal number, since it uses more digits than its factorization.

73143743401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540902 (or 270451 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 37.

The spelling of 73143743401 in words is "seventy-three billion, one hundred forty-three million, seven hundred forty-three thousand, four hundred one".