64403410061 has 2 divisors, whose sum is σ = 64403410062. Its totient is φ = 64403410060.

The previous prime is 64403410051. The next prime is 64403410063. The reversal of 64403410061 is 16001430446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36890884900 + 27512525161 = 192070^2 + 165869^2 .

It is a cyclic number.

It is not a de Polignac number, because 64403410061 - 2⁶ = 64403409997 is a prime.

Together with 64403410063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64403410063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32201705030 + 32201705031.

It is an arithmetic number, because the mean of its divisors is an integer number (32201705031).

Almost surely, 2^64403410061 is an apocalyptic number.

It is an amenable number.

64403410061 is a deficient number, since it is larger than the sum of its proper divisors (1).

64403410061 is an equidigital number, since it uses as much as digits as its factorization.

64403410061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

The spelling of 64403410061 in words is "sixty-four billion, four hundred three million, four hundred ten thousand, sixty-one".