65757535573 has 2 divisors, whose sum is σ = 65757535574. Its totient is φ = 65757535572.

The previous prime is 65757535447. The next prime is 65757535681. The reversal of 65757535573 is 37553575756.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36529530129 + 29228005444 = 191127^2 + 170962^2 .

It is a cyclic number.

It is not a de Polignac number, because 65757535573 - 2²⁹ = 65220664661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65757535073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32878767786 + 32878767787.

It is an arithmetic number, because the mean of its divisors is an integer number (32878767787).

Almost surely, 2^65757535573 is an apocalyptic number.

It is an amenable number.

65757535573 is a deficient number, since it is larger than the sum of its proper divisors (1).

65757535573 is an equidigital number, since it uses as much as digits as its factorization.

65757535573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 57881250, while the sum is 58.

The spelling of 65757535573 in words is "sixty-five billion, seven hundred fifty-seven million, five hundred thirty-five thousand, five hundred seventy-three".