71383615043329 has 2 divisors, whose sum is σ = 71383615043330. Its totient is φ = 71383615043328.

The previous prime is 71383615043311. The next prime is 71383615043407. The reversal of 71383615043329 is 92334051638317.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53513321478400 + 17870293564929 = 7315280^2 + 4227327^2 .

It is a cyclic number.

It is not a de Polignac number, because 71383615043329 - 2³⁷ = 71246176089857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71383615043329.

It is not a weakly prime, because it can be changed into another prime (71383615043929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35691807521664 + 35691807521665.

It is an arithmetic number, because the mean of its divisors is an integer number (35691807521665).

It is a 1-persistent number, because it is pandigital, but 2⋅71383615043329 = 142767230086658 is not.

Almost surely, 2^{71383615043329} is an apocalyptic number.

It is an amenable number.

71383615043329 is a deficient number, since it is larger than the sum of its proper divisors (1).

71383615043329 is an equidigital number, since it uses as much as digits as its factorization.

71383615043329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9797760, while the sum is 55.

The spelling of 71383615043329 in words is "seventy-one trillion, three hundred eighty-three billion, six hundred fifteen million, forty-three thousand, three hundred twenty-nine".