71451345641 has 16 divisors (see below), whose sum is σ = 82525746240. Its totient is φ = 61304817600.

The previous prime is 71451345631. The next prime is 71451345649. The reversal of 71451345641 is 14654315417.

It is not a de Polignac number, because 71451345641 - 2¹⁸ = 71451083497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71451345649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2715935 + ... + 2742116.

It is an arithmetic number, because the mean of its divisors is an integer number (5157859140).

Almost surely, 2^71451345641 is an apocalyptic number.

It is an amenable number.

71451345641 is a deficient number, since it is larger than the sum of its proper divisors (11074400599).

71451345641 is a wasteful number, since it uses less digits than its factorization.

71451345641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5458136.

The product of its digits is 201600, while the sum is 41.

The spelling of 71451345641 in words is "seventy-one billion, four hundred fifty-one million, three hundred forty-five thousand, six hundred forty-one".