65850723901 has 2 divisors, whose sum is σ = 65850723902. Its totient is φ = 65850723900.

The previous prime is 65850723863. The next prime is 65850723923. The reversal of 65850723901 is 10932705856.

65850723901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34791948676 + 31058775225 = 186526^2 + 176235^2 .

It is a cyclic number.

It is not a de Polignac number, because 65850723901 - 2²¹ = 65848626749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65850723941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32925361950 + 32925361951.

It is an arithmetic number, because the mean of its divisors is an integer number (32925361951).

Almost surely, 2^65850723901 is an apocalyptic number.

It is an amenable number.

65850723901 is a deficient number, since it is larger than the sum of its proper divisors (1).

65850723901 is an equidigital number, since it uses as much as digits as its factorization.

65850723901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 65850723901 in words is "sixty-five billion, eight hundred fifty million, seven hundred twenty-three thousand, nine hundred one".