71605336001 has 2 divisors, whose sum is σ = 71605336002. Its totient is φ = 71605336000.

The previous prime is 71605335983. The next prime is 71605336007. The reversal of 71605336001 is 10063350617.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61444494400 + 10160841601 = 247880^2 + 100801^2 .

It is a cyclic number.

It is not a de Polignac number, because 71605336001 - 2⁶ = 71605335937 is a prime.

It is a super-2 number, since 2×71605336001² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71605336007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35802668000 + 35802668001.

It is an arithmetic number, because the mean of its divisors is an integer number (35802668001).

Almost surely, 2^71605336001 is an apocalyptic number.

It is an amenable number.

71605336001 is a deficient number, since it is larger than the sum of its proper divisors (1).

71605336001 is an equidigital number, since it uses as much as digits as its factorization.

71605336001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 32.

Adding to 71605336001 its reverse (10063350617), we get a palindrome (81668686618).

The spelling of 71605336001 in words is "seventy-one billion, six hundred five million, three hundred thirty-six thousand, one".