65906532157 has 2 divisors, whose sum is σ = 65906532158. Its totient is φ = 65906532156.

The previous prime is 65906532151. The next prime is 65906532191. The reversal of 65906532157 is 75123560956.

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., 65869735801 + 36796356 = 256651^2 + 6066^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65906532157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65906532157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65906532151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32953266078 + 32953266079.

It is an arithmetic number, because the mean of its divisors is an integer number (32953266079).

Almost surely, 2^65906532157 is an apocalyptic number.

It is an amenable number.

65906532157 is a deficient number, since it is larger than the sum of its proper divisors (1).

65906532157 is an equidigital number, since it uses as much as digits as its factorization.

65906532157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1701000, while the sum is 49.

The spelling of 65906532157 in words is "sixty-five billion, nine hundred six million, five hundred thirty-two thousand, one hundred fifty-seven".