75705666901 has 2 divisors, whose sum is σ = 75705666902. Its totient is φ = 75705666900.

The previous prime is 75705666887. The next prime is 75705666941. The reversal of 75705666901 is 10966650757.

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., 75002038225 + 703628676 = 273865^2 + 26526^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75705666901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75705666941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37852833450 + 37852833451.

It is an arithmetic number, because the mean of its divisors is an integer number (37852833451).

Almost surely, 2^75705666901 is an apocalyptic number.

It is an amenable number.

75705666901 is a deficient number, since it is larger than the sum of its proper divisors (1).

75705666901 is an equidigital number, since it uses as much as digits as its factorization.

75705666901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2381400, while the sum is 52.

The spelling of 75705666901 in words is "seventy-five billion, seven hundred five million, six hundred sixty-six thousand, nine hundred one".