71447232753 has 24 divisors (see below), whose sum is σ = 113850882600. Its totient is φ = 42895146240.

The previous prime is 71447232709. The next prime is 71447232757. The reversal of 71447232753 is 35723274417.

It can be written as a sum of positive squares in 4 ways, for example, as 4753137249 + 66694095504 = 68943^2 + 258252^2 .

It is not a de Polignac number, because 71447232753 - 2⁸ = 71447232497 is a prime.

It is a super-2 number, since 2×71447232753² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 71447232699 and 71447232708.

It is not an unprimeable number, because it can be changed into a prime (71447232757) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7442278 + ... + 7451871.

It is an arithmetic number, because the mean of its divisors is an integer number (4743786775).

Almost surely, 2^71447232753 is an apocalyptic number.

It is an amenable number.

71447232753 is a deficient number, since it is larger than the sum of its proper divisors (42403649847).

71447232753 is a wasteful number, since it uses less digits than its factorization.

71447232753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14894209 (or 14894206 counting only the distinct ones).

The product of its digits is 987840, while the sum is 45.

The spelling of 71447232753 in words is "seventy-one billion, four hundred forty-seven million, two hundred thirty-two thousand, seven hundred fifty-three".