71201939573 has 2 divisors, whose sum is σ = 71201939574. Its totient is φ = 71201939572.

The previous prime is 71201939551. The next prime is 71201939603. The reversal of 71201939573 is 37593910217.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69159532324 + 2042407249 = 262982^2 + 45193^2 .

It is an emirp because it is prime and its reverse (37593910217) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71201939573 - 2¹² = 71201935477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71201939503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35600969786 + 35600969787.

It is an arithmetic number, because the mean of its divisors is an integer number (35600969787).

Almost surely, 2^71201939573 is an apocalyptic number.

It is an amenable number.

71201939573 is a deficient number, since it is larger than the sum of its proper divisors (1).

71201939573 is an equidigital number, since it uses as much as digits as its factorization.

71201939573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 357210, while the sum is 47.

The spelling of 71201939573 in words is "seventy-one billion, two hundred one million, nine hundred thirty-nine thousand, five hundred seventy-three".