64123941457 has 2 divisors, whose sum is σ = 64123941458. Its totient is φ = 64123941456.

The previous prime is 64123941443. The next prime is 64123941467. The reversal of 64123941457 is 75414932146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61996518081 + 2127423376 = 248991^2 + 46124^2 .

It is a cyclic number.

It is not a de Polignac number, because 64123941457 - 2¹⁵ = 64123908689 is a prime.

It is a super-2 number, since 2×64123941457² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64123941407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32061970728 + 32061970729.

It is an arithmetic number, because the mean of its divisors is an integer number (32061970729).

Almost surely, 2^64123941457 is an apocalyptic number.

It is an amenable number.

64123941457 is a deficient number, since it is larger than the sum of its proper divisors (1).

64123941457 is an equidigital number, since it uses as much as digits as its factorization.

64123941457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 46.

It can be divided in two parts, 641239 and 41457, that added together give a triangular number (682696 = T₁₁₆₈).

The spelling of 64123941457 in words is "sixty-four billion, one hundred twenty-three million, nine hundred forty-one thousand, four hundred fifty-seven".