71376743641 has 4 divisors (see below), whose sum is σ = 81573421312. Its totient is φ = 61180065972.

The previous prime is 71376743639. The next prime is 71376743719. The reversal of 71376743641 is 14634767317.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71376743641 - 2¹ = 71376743639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71376743441) 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, 5098338825 + ... + 5098338838.

It is an arithmetic number, because the mean of its divisors is an integer number (20393355328).

Almost surely, 2^71376743641 is an apocalyptic number.

It is an amenable number.

71376743641 is a deficient number, since it is larger than the sum of its proper divisors (10196677671).

71376743641 is a wasteful number, since it uses less digits than its factorization.

71376743641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10196677670.

The product of its digits is 1778112, while the sum is 49.

The spelling of 71376743641 in words is "seventy-one billion, three hundred seventy-six million, seven hundred forty-three thousand, six hundred forty-one".