71603633143449 has 45 divisors (see below), whose sum is σ = 113774391399045. Its totient is φ = 43394279682600.

The previous prime is 71603633143439. The next prime is 71603633143541. The reversal of 71603633143449 is 94434133630617.

The square root of 71603633143449 is 8461893.

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

71603633143449 is a `hidden beast` number, since 7 + 160 + 3 + 6 + 3 + 3 + 1 + 434 + 49 = 666.

It is not a de Polignac number, because 71603633143449 - 2¹⁷ = 71603633012377 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71603633143395 and 71603633143404.

It is not an unprimeable number, because it can be changed into a prime (71603633143439) 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 44 ways as a sum of consecutive naturals, for example, 3071655504 + ... + 3071678814.

Almost surely, 2^{71603633143449} is an apocalyptic number.

71603633143449 is the 8461893-rd square number.

71603633143449 is the 4230947-th centered octagonal number.

It is an amenable number.

71603633143449 is a deficient number, since it is larger than the sum of its proper divisors (42170758255596).

71603633143449 is an frugal number, since it uses more digits than its factorization.

71603633143449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46672 (or 23325 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 54.

The spelling of 71603633143449 in words is "seventy-one trillion, six hundred three billion, six hundred thirty-three million, one hundred forty-three thousand, four hundred forty-nine".