64319554969 has 2 divisors, whose sum is σ = 64319554970. Its totient is φ = 64319554968.

The previous prime is 64319554903. The next prime is 64319555021. The reversal of 64319554969 is 96945591346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57138687369 + 7180867600 = 239037^2 + 84740^2 .

It is a cyclic number.

It is not a de Polignac number, because 64319554969 - 2⁹ = 64319554457 is a prime.

It is a super-2 number, since 2×64319554969² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64319554769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32159777484 + 32159777485.

It is an arithmetic number, because the mean of its divisors is an integer number (32159777485).

Almost surely, 2^64319554969 is an apocalyptic number.

It is an amenable number.

64319554969 is a deficient number, since it is larger than the sum of its proper divisors (1).

64319554969 is an equidigital number, since it uses as much as digits as its factorization.

64319554969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31492800, while the sum is 61.

The spelling of 64319554969 in words is "sixty-four billion, three hundred nineteen million, five hundred fifty-four thousand, nine hundred sixty-nine".