64454526377 has 2 divisors, whose sum is σ = 64454526378. Its totient is φ = 64454526376.

The previous prime is 64454526337. The next prime is 64454526413. The reversal of 64454526377 is 77362545446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54305777296 + 10148749081 = 233036^2 + 100741^2 .

It is a cyclic number.

It is not a de Polignac number, because 64454526377 - 2⁶ = 64454526313 is a prime.

It is a super-2 number, since 2×64454526377² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64454526337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32227263188 + 32227263189.

It is an arithmetic number, because the mean of its divisors is an integer number (32227263189).

Almost surely, 2^64454526377 is an apocalyptic number.

It is an amenable number.

64454526377 is a deficient number, since it is larger than the sum of its proper divisors (1).

64454526377 is an equidigital number, since it uses as much as digits as its factorization.

64454526377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16934400, while the sum is 53.

The spelling of 64454526377 in words is "sixty-four billion, four hundred fifty-four million, five hundred twenty-six thousand, three hundred seventy-seven".