71447746345 has 8 divisors (see below), whose sum is σ = 86056023240. Its totient is φ = 56945712000.

The previous prime is 71447746313. The next prime is 71447746369. The reversal of 71447746345 is 54364774417.

It can be written as a sum of positive squares in 4 ways, for example, as 465998569 + 70981747776 = 21587^2 + 266424^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71447746345 - 2⁵ = 71447746313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71447746292 and 71447746301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26559156 + ... + 26561845.

It is an arithmetic number, because the mean of its divisors is an integer number (10757002905).

Almost surely, 2^71447746345 is an apocalyptic number.

It is an amenable number.

71447746345 is a deficient number, since it is larger than the sum of its proper divisors (14608276895).

71447746345 is a wasteful number, since it uses less digits than its factorization.

71447746345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53121275.

The product of its digits is 7902720, while the sum is 52.

The spelling of 71447746345 in words is "seventy-one billion, four hundred forty-seven million, seven hundred forty-six thousand, three hundred forty-five".