71372477791 has 2 divisors, whose sum is σ = 71372477792. Its totient is φ = 71372477790.

The previous prime is 71372477749. The next prime is 71372477801. The reversal of 71372477791 is 19777427317.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71372477791 - 2¹⁹ = 71371953503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71372475791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35686238895 + 35686238896.

It is an arithmetic number, because the mean of its divisors is an integer number (35686238896).

Almost surely, 2^71372477791 is an apocalyptic number.

71372477791 is a deficient number, since it is larger than the sum of its proper divisors (1).

71372477791 is an equidigital number, since it uses as much as digits as its factorization.

71372477791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3630312, while the sum is 55.

The spelling of 71372477791 in words is "seventy-one billion, three hundred seventy-two million, four hundred seventy-seven thousand, seven hundred ninety-one".