64324601591 has 2 divisors, whose sum is σ = 64324601592. Its totient is φ = 64324601590.

The previous prime is 64324601519. The next prime is 64324601609. The reversal of 64324601591 is 19510642346.

Together with previous prime (64324601519) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64324601591 - 2³⁴ = 47144732407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64324600591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32162300795 + 32162300796.

It is an arithmetic number, because the mean of its divisors is an integer number (32162300796).

Almost surely, 2^64324601591 is an apocalyptic number.

64324601591 is a deficient number, since it is larger than the sum of its proper divisors (1).

64324601591 is an equidigital number, since it uses as much as digits as its factorization.

64324601591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 64324601591 in words is "sixty-four billion, three hundred twenty-four million, six hundred one thousand, five hundred ninety-one".