64099123769 has 2 divisors, whose sum is σ = 64099123770. Its totient is φ = 64099123768.

The previous prime is 64099123757. The next prime is 64099123799. The reversal of 64099123769 is 96732199046.

64099123769 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49702243600 + 14396880169 = 222940^2 + 119987^2 .

It is a cyclic number.

It is not a de Polignac number, because 64099123769 - 2¹² = 64099119673 is a prime.

It is a super-2 number, since 2×64099123769² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (64099123799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32049561884 + 32049561885.

It is an arithmetic number, because the mean of its divisors is an integer number (32049561885).

Almost surely, 2^64099123769 is an apocalyptic number.

It is an amenable number.

64099123769 is a deficient number, since it is larger than the sum of its proper divisors (1).

64099123769 is an equidigital number, since it uses as much as digits as its factorization.

64099123769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4408992, while the sum is 56.

The spelling of 64099123769 in words is "sixty-four billion, ninety-nine million, one hundred twenty-three thousand, seven hundred sixty-nine".