64425723065177 has 4 divisors (see below), whose sum is σ = 64460120142900. Its totient is φ = 64391325987456.

The previous prime is 64425723065167. The next prime is 64425723065213. The reversal of 64425723065177 is 77156032752446.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22355723937856 + 42069999127321 = 4728184^2 + 6486139^2 .

It is a cyclic number.

It is not a de Polignac number, because 64425723065177 - 2⁴ = 64425723065161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64425723065167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17198536052 + ... + 17198539797.

It is an arithmetic number, because the mean of its divisors is an integer number (16115030035725).

Almost surely, 2^{64425723065177} is an apocalyptic number.

It is an amenable number.

64425723065177 is a deficient number, since it is larger than the sum of its proper divisors (34397077723).

64425723065177 is a wasteful number, since it uses less digits than its factorization.

64425723065177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34397077722.

The product of its (nonzero) digits is 59270400, while the sum is 59.

The spelling of 64425723065177 in words is "sixty-four trillion, four hundred twenty-five billion, seven hundred twenty-three million, sixty-five thousand, one hundred seventy-seven".