64153362617 has 2 divisors, whose sum is σ = 64153362618. Its totient is φ = 64153362616.

The previous prime is 64153362607. The next prime is 64153362671. The reversal of 64153362617 is 71626335146.

Together with next prime (64153362671) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62225801401 + 1927561216 = 249451^2 + 43904^2 .

It is a cyclic number.

It is not a de Polignac number, because 64153362617 - 2²⁰ = 64152314041 is a prime.

It is not a weakly prime, because it can be changed into another prime (64153362607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32076681308 + 32076681309.

It is an arithmetic number, because the mean of its divisors is an integer number (32076681309).

Almost surely, 2^64153362617 is an apocalyptic number.

It is an amenable number.

64153362617 is a deficient number, since it is larger than the sum of its proper divisors (1).

64153362617 is an equidigital number, since it uses as much as digits as its factorization.

64153362617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 44.

The spelling of 64153362617 in words is "sixty-four billion, one hundred fifty-three million, three hundred sixty-two thousand, six hundred seventeen".