64262756489 has 2 divisors, whose sum is σ = 64262756490. Its totient is φ = 64262756488.

The previous prime is 64262756443. The next prime is 64262756491. The reversal of 64262756489 is 98465726246.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36598750864 + 27664005625 = 191308^2 + 166325^2 .

It is a cyclic number.

It is not a de Polignac number, because 64262756489 - 2¹⁶ = 64262690953 is a prime.

Together with 64262756491, 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 (64262756189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32131378244 + 32131378245.

It is an arithmetic number, because the mean of its divisors is an integer number (32131378245).

Almost surely, 2^64262756489 is an apocalyptic number.

It is an amenable number.

64262756489 is a deficient number, since it is larger than the sum of its proper divisors (1).

64262756489 is an equidigital number, since it uses as much as digits as its factorization.

64262756489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34836480, while the sum is 59.

The spelling of 64262756489 in words is "sixty-four billion, two hundred sixty-two million, seven hundred fifty-six thousand, four hundred eighty-nine".