64642024519 has 2 divisors, whose sum is σ = 64642024520. Its totient is φ = 64642024518.

The previous prime is 64642024511. The next prime is 64642024543. The reversal of 64642024519 is 91542024646.

64642024519 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64642024519 - 2³ = 64642024511 is a prime.

It is a super-2 number, since 2×64642024519² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64642024511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32321012259 + 32321012260.

It is an arithmetic number, because the mean of its divisors is an integer number (32321012260).

Almost surely, 2^64642024519 is an apocalyptic number.

64642024519 is a deficient number, since it is larger than the sum of its proper divisors (1).

64642024519 is an equidigital number, since it uses as much as digits as its factorization.

64642024519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 64642024519 in words is "sixty-four billion, six hundred forty-two million, twenty-four thousand, five hundred nineteen".