64255310145 has 24 divisors (see below), whose sum is σ = 119943246696. Its totient is φ = 31633383168.

The previous prime is 64255310117. The next prime is 64255310149. The reversal of 64255310145 is 54101355246.

64255310145 is a `hidden beast` number, since 64 + 2 + 553 + 1 + 0 + 1 + 45 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3116318976 + 61138991169 = 55824^2 + 247263^2 .

It is not a de Polignac number, because 64255310145 - 2⁷ = 64255310017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64255310149) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54918484 + ... + 54919653.

It is an arithmetic number, because the mean of its divisors is an integer number (4997635279).

Almost surely, 2^64255310145 is an apocalyptic number.

64255310145 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64255310145 is a deficient number, since it is larger than the sum of its proper divisors (55687936551).

64255310145 is a wasteful number, since it uses less digits than its factorization.

64255310145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109838161 (or 109838158 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 64255310145 in words is "sixty-four billion, two hundred fifty-five million, three hundred ten thousand, one hundred forty-five".