64123940359 has 2 divisors, whose sum is σ = 64123940360. Its totient is φ = 64123940358.

The previous prime is 64123940339. The next prime is 64123940371. The reversal of 64123940359 is 95304932146.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64123940359 - 2¹⁵ = 64123907591 is a prime.

It is a super-2 number, since 2×64123940359² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64123940339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32061970179 + 32061970180.

It is an arithmetic number, because the mean of its divisors is an integer number (32061970180).

Almost surely, 2^64123940359 is an apocalyptic number.

64123940359 is a deficient number, since it is larger than the sum of its proper divisors (1).

64123940359 is an equidigital number, since it uses as much as digits as its factorization.

64123940359 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 46.

The spelling of 64123940359 in words is "sixty-four billion, one hundred twenty-three million, nine hundred forty thousand, three hundred fifty-nine".