64556011489 has 2 divisors, whose sum is σ = 64556011490. Its totient is φ = 64556011488.

The previous prime is 64556011439. The next prime is 64556011501. The reversal of 64556011489 is 98411065546.

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., 43750833889 + 20805177600 = 209167^2 + 144240^2 .

It is a cyclic number.

It is not a de Polignac number, because 64556011489 - 2¹³ = 64556003297 is a prime.

It is not a weakly prime, because it can be changed into another prime (64556011439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32278005744 + 32278005745.

It is an arithmetic number, because the mean of its divisors is an integer number (32278005745).

Almost surely, 2^64556011489 is an apocalyptic number.

It is an amenable number.

64556011489 is a deficient number, since it is larger than the sum of its proper divisors (1).

64556011489 is an equidigital number, since it uses as much as digits as its factorization.

64556011489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1036800, while the sum is 49.

The spelling of 64556011489 in words is "sixty-four billion, five hundred fifty-six million, eleven thousand, four hundred eighty-nine".