64004034881 has 2 divisors, whose sum is σ = 64004034882. Its totient is φ = 64004034880.

The previous prime is 64004034841. The next prime is 64004034883. The reversal of 64004034881 is 18843040046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63976114225 + 27920656 = 252935^2 + 5284^2 .

It is a cyclic number.

It is not a de Polignac number, because 64004034881 - 2³⁴ = 46824165697 is a prime.

It is a super-2 number, since 2×64004034881² (a number of 22 digits) contains 22 as substring.

Together with 64004034883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64004034883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32002017440 + 32002017441.

It is an arithmetic number, because the mean of its divisors is an integer number (32002017441).

Almost surely, 2^64004034881 is an apocalyptic number.

It is an amenable number.

64004034881 is a deficient number, since it is larger than the sum of its proper divisors (1).

64004034881 is an equidigital number, since it uses as much as digits as its factorization.

64004034881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 38.

The spelling of 64004034881 in words is "sixty-four billion, four million, thirty-four thousand, eight hundred eighty-one".