64506105045 has 24 divisors (see below), whose sum is σ = 111817415736. Its totient is φ = 34401153408.

The previous prime is 64506105023. The next prime is 64506105089. The reversal of 64506105045 is 54050160546.

64506105045 = T₃₀₈₄₆ + T₃₀₈₄₇ + ... + T₃₀₉₈₀.

64506105045 is a `hidden beast` number, since 6 + 4 + 506 + 105 + 0 + 45 = 666.

64506105045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 587141361 + 63918963684 = 24231^2 + 252822^2 .

It is not a de Polignac number, because 64506105045 - 2⁶ = 64506104981 is a prime.

It is a super-2 number, since 2×64506105045² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 946867 + ... + 1012703.

It is an arithmetic number, because the mean of its divisors is an integer number (4659058989).

Almost surely, 2^64506105045 is an apocalyptic number.

It is an amenable number.

64506105045 is a deficient number, since it is larger than the sum of its proper divisors (47311310691).

64506105045 is a wasteful number, since it uses less digits than its factorization.

64506105045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87621 (or 87618 counting only the distinct ones).

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

The spelling of 64506105045 in words is "sixty-four billion, five hundred six million, one hundred five thousand, forty-five".