71703256281 has 16 divisors (see below), whose sum is σ = 95705702400. Its totient is φ = 47751525648.

The previous prime is 71703256279. The next prime is 71703256357. The reversal of 71703256281 is 18265230717.

It is not a de Polignac number, because 71703256281 - 2¹ = 71703256279 is a prime.

It is a super-2 number, since 2×71703256281² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71703256181) 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 15 ways as a sum of consecutive naturals, for example, 20679910 + ... + 20683376.

It is an arithmetic number, because the mean of its divisors is an integer number (5981606400).

Almost surely, 2^71703256281 is an apocalyptic number.

It is an amenable number.

71703256281 is a deficient number, since it is larger than the sum of its proper divisors (24002446119).

71703256281 is a wasteful number, since it uses less digits than its factorization.

71703256281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8788.

The product of its (nonzero) digits is 141120, while the sum is 42.

Adding to 71703256281 its reverse (18265230717), we get a palindrome (89968486998).

The spelling of 71703256281 in words is "seventy-one billion, seven hundred three million, two hundred fifty-six thousand, two hundred eighty-one".