65155200997 has 2 divisors, whose sum is σ = 65155200998. Its totient is φ = 65155200996.

The previous prime is 65155200973. The next prime is 65155201063. The reversal of 65155200997 is 79900255156.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39967606561 + 25187594436 = 199919^2 + 158706^2 .

It is a cyclic number.

It is not a de Polignac number, because 65155200997 - 2²³ = 65146812389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65155200997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65155206997) 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, 32577600498 + 32577600499.

It is an arithmetic number, because the mean of its divisors is an integer number (32577600499).

Almost surely, 2^65155200997 is an apocalyptic number.

It is an amenable number.

65155200997 is a deficient number, since it is larger than the sum of its proper divisors (1).

65155200997 is an equidigital number, since it uses as much as digits as its factorization.

65155200997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 850500, while the sum is 49.

The spelling of 65155200997 in words is "sixty-five billion, one hundred fifty-five million, two hundred thousand, nine hundred ninety-seven".