71848633441 has 4 divisors (see below), whose sum is σ = 77375451412. Its totient is φ = 66321815472.

The previous prime is 71848633433. The next prime is 71848633471. The reversal of 71848633441 is 14433684817.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14433684817 = 313 ⋅46114009.

It can be written as a sum of positive squares in 2 ways, for example, as 4446089041 + 67402544400 = 66679^2 + 259620^2 .

It is a cyclic number.

It is not a de Polignac number, because 71848633441 - 2³ = 71848633433 is a prime.

It is a super-2 number, since 2×71848633441² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71848633411) 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, 2763408966 + ... + 2763408991.

It is an arithmetic number, because the mean of its divisors is an integer number (19343862853).

Almost surely, 2^71848633441 is an apocalyptic number.

It is an amenable number.

71848633441 is a deficient number, since it is larger than the sum of its proper divisors (5526817971).

71848633441 is a wasteful number, since it uses less digits than its factorization.

71848633441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5526817970.

The product of its digits is 1548288, while the sum is 49.

The spelling of 71848633441 in words is "seventy-one billion, eight hundred forty-eight million, six hundred thirty-three thousand, four hundred forty-one".