71461338481 has 4 divisors (see below), whose sum is σ = 76958364532. Its totient is φ = 65964312432.

The previous prime is 71461338479. The next prime is 71461338521. The reversal of 71461338481 is 18483316417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18483316417 = 11423 ⋅1618079.

It can be written as a sum of positive squares in 2 ways, for example, as 32358253456 + 39103085025 = 179884^2 + 197745^2 .

It is a cyclic number.

It is not a de Polignac number, because 71461338481 - 2¹ = 71461338479 is a prime.

It is a super-2 number, since 2×71461338481² (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 (71461338181) 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, 2748513006 + ... + 2748513031.

It is an arithmetic number, because the mean of its divisors is an integer number (19239591133).

Almost surely, 2^71461338481 is an apocalyptic number.

It is an amenable number.

71461338481 is a deficient number, since it is larger than the sum of its proper divisors (5497026051).

71461338481 is a wasteful number, since it uses less digits than its factorization.

71461338481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5497026050.

The product of its digits is 387072, while the sum is 46.

The spelling of 71461338481 in words is "seventy-one billion, four hundred sixty-one million, three hundred thirty-eight thousand, four hundred eighty-one".