71447746373 has 2 divisors, whose sum is σ = 71447746374. Its totient is φ = 71447746372.

The previous prime is 71447746369. The next prime is 71447746451. The reversal of 71447746373 is 37364774417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70701746404 + 745999969 = 265898^2 + 27313^2 .

It is a cyclic number.

It is not a de Polignac number, because 71447746373 - 2² = 71447746369 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71447746313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35723873186 + 35723873187.

It is an arithmetic number, because the mean of its divisors is an integer number (35723873187).

Almost surely, 2^71447746373 is an apocalyptic number.

It is an amenable number.

71447746373 is a deficient number, since it is larger than the sum of its proper divisors (1).

71447746373 is an equidigital number, since it uses as much as digits as its factorization.

71447746373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8297856, while the sum is 53.

The spelling of 71447746373 in words is "seventy-one billion, four hundred forty-seven million, seven hundred forty-six thousand, three hundred seventy-three".