71263470042577 has 2 divisors, whose sum is σ = 71263470042578. Its totient is φ = 71263470042576.

The previous prime is 71263470042497. The next prime is 71263470042599. The reversal of 71263470042577 is 77524007436217.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71203877421121 + 59592621456 = 8438239^2 + 244116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71263470042577 is a prime.

It is not a weakly prime, because it can be changed into another prime (71263470046577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35631735021288 + 35631735021289.

It is an arithmetic number, because the mean of its divisors is an integer number (35631735021289).

Almost surely, 2^{71263470042577} is an apocalyptic number.

It is an amenable number.

71263470042577 is a deficient number, since it is larger than the sum of its proper divisors (1).

71263470042577 is an equidigital number, since it uses as much as digits as its factorization.

71263470042577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13829760, while the sum is 55.

The spelling of 71263470042577 in words is "seventy-one trillion, two hundred sixty-three billion, four hundred seventy million, forty-two thousand, five hundred seventy-seven".