71765775101 has 2 divisors, whose sum is σ = 71765775102. Its totient is φ = 71765775100.

The previous prime is 71765775097. The next prime is 71765775131. The reversal of 71765775101 is 10157756717.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53789669476 + 17976105625 = 231926^2 + 134075^2 .

It is a cyclic number.

It is not a de Polignac number, because 71765775101 - 2² = 71765775097 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71765775131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35882887550 + 35882887551.

It is an arithmetic number, because the mean of its divisors is an integer number (35882887551).

Almost surely, 2^71765775101 is an apocalyptic number.

It is an amenable number.

71765775101 is a deficient number, since it is larger than the sum of its proper divisors (1).

71765775101 is an equidigital number, since it uses as much as digits as its factorization.

71765775101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360150, while the sum is 47.

The spelling of 71765775101 in words is "seventy-one billion, seven hundred sixty-five million, seven hundred seventy-five thousand, one hundred one".