65401216513579 has 2 divisors, whose sum is σ = 65401216513580. Its totient is φ = 65401216513578.

The previous prime is 65401216513541. The next prime is 65401216513679. The reversal of 65401216513579 is 97531561210456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65401216513579 - 2¹¹ = 65401216511531 is a prime.

It is not a weakly prime, because it can be changed into another prime (65401216513679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32700608256789 + 32700608256790.

It is an arithmetic number, because the mean of its divisors is an integer number (32700608256790).

Almost surely, 2^{65401216513579} is an apocalyptic number.

65401216513579 is a deficient number, since it is larger than the sum of its proper divisors (1).

65401216513579 is an equidigital number, since it uses as much as digits as its factorization.

65401216513579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804000, while the sum is 55.

The spelling of 65401216513579 in words is "sixty-five trillion, four hundred one billion, two hundred sixteen million, five hundred thirteen thousand, five hundred seventy-nine".