71650487441 has 4 divisors (see below), whose sum is σ = 77162063412. Its totient is φ = 66138911472.

The previous prime is 71650487429. The next prime is 71650487477. The reversal of 71650487441 is 14478405617.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20357297041 + 51293190400 = 142679^2 + 226480^2 .

It is a cyclic number.

It is not a de Polignac number, because 71650487441 - 2¹⁰ = 71650486417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71650487411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2755787966 + ... + 2755787991.

It is an arithmetic number, because the mean of its divisors is an integer number (19290515853).

Almost surely, 2^71650487441 is an apocalyptic number.

It is an amenable number.

71650487441 is a deficient number, since it is larger than the sum of its proper divisors (5511575971).

71650487441 is a wasteful number, since it uses less digits than its factorization.

71650487441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5511575970.

The product of its (nonzero) digits is 752640, while the sum is 47.

The spelling of 71650487441 in words is "seventy-one billion, six hundred fifty million, four hundred eighty-seven thousand, four hundred forty-one".