64394051429 has 2 divisors, whose sum is σ = 64394051430. Its totient is φ = 64394051428.

The previous prime is 64394051417. The next prime is 64394051431. The reversal of 64394051429 is 92415049346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55612487329 + 8781564100 = 235823^2 + 93710^2 .

It is a cyclic number.

It is not a de Polignac number, because 64394051429 - 2⁸ = 64394051173 is a prime.

Together with 64394051431, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64394054429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32197025714 + 32197025715.

It is an arithmetic number, because the mean of its divisors is an integer number (32197025715).

Almost surely, 2^64394051429 is an apocalyptic number.

It is an amenable number.

64394051429 is a deficient number, since it is larger than the sum of its proper divisors (1).

64394051429 is an equidigital number, since it uses as much as digits as its factorization.

64394051429 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 64394051429 in words is "sixty-four billion, three hundred ninety-four million, fifty-one thousand, four hundred twenty-nine".