64150005145 has 4 divisors (see below), whose sum is σ = 76980006180. Its totient is φ = 51320004112.

The previous prime is 64150005133. The next prime is 64150005191. The reversal of 64150005145 is 54150005146.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54150005146 = 2 ⋅27075002573.

It can be written as a sum of positive squares in 2 ways, for example, as 33972756489 + 30177248656 = 184317^2 + 173716^2 .

It is a cyclic number.

It is not a de Polignac number, because 64150005145 - 2¹¹ = 64150003097 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6415000510 + ... + 6415000519.

It is an arithmetic number, because the mean of its divisors is an integer number (19245001545).

Almost surely, 2^64150005145 is an apocalyptic number.

It is an amenable number.

64150005145 is a deficient number, since it is larger than the sum of its proper divisors (12830001035).

64150005145 is a wasteful number, since it uses less digits than its factorization.

64150005145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12830001034.

The product of its (nonzero) digits is 12000, while the sum is 31.

Subtracting from 64150005145 its reverse (54150005146), we obtain a palindrome (9999999999).

The spelling of 64150005145 in words is "sixty-four billion, one hundred fifty million, five thousand, one hundred forty-five".