71457746791 has 2 divisors, whose sum is σ = 71457746792. Its totient is φ = 71457746790.

The previous prime is 71457746651. The next prime is 71457746813. The reversal of 71457746791 is 19764775417.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71457746791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71457746491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35728873395 + 35728873396.

It is an arithmetic number, because the mean of its divisors is an integer number (35728873396).

Almost surely, 2^71457746791 is an apocalyptic number.

71457746791 is a deficient number, since it is larger than the sum of its proper divisors (1).

71457746791 is an equidigital number, since it uses as much as digits as its factorization.

71457746791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10372320, while the sum is 58.

The spelling of 71457746791 in words is "seventy-one billion, four hundred fifty-seven million, seven hundred forty-six thousand, seven hundred ninety-one".