64464254056 has 16 divisors (see below), whose sum is σ = 120894192900. Its totient is φ = 32225802624.

The previous prime is 64464254051. The next prime is 64464254059. The reversal of 64464254056 is 65045246446.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 58452732900 + 6011521156 = 241770^2 + 77534^2 .

It is a super-2 number, since 2×64464254056² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64464253997 and 64464254015.

It is not an unprimeable number, because it can be changed into a prime (64464254051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747091 + ... + 828898.

Almost surely, 2^64464254056 is an apocalyptic number.

It is an amenable number.

64464254056 is a deficient number, since it is larger than the sum of its proper divisors (56429938844).

64464254056 is a wasteful number, since it uses less digits than its factorization.

64464254056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581108 (or 1581104 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 46.

The spelling of 64464254056 in words is "sixty-four billion, four hundred sixty-four million, two hundred fifty-four thousand, fifty-six".