64516070709 has 12 divisors (see below), whose sum is σ = 94948180236. Its totient is φ = 42199190592.

The previous prime is 64516070699. The next prime is 64516070737. The reversal of 64516070709 is 90707061546.

It is a happy number.

64516070709 is a `hidden beast` number, since 6 + 451 + 60 + 70 + 70 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 49917390084 + 14598680625 = 223422^2 + 120825^2 .

It is not a de Polignac number, because 64516070709 - 2⁴ = 64516070693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64516070789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67626432 + ... + 67627385.

It is an arithmetic number, because the mean of its divisors is an integer number (7912348353).

Almost surely, 2^64516070709 is an apocalyptic number.

It is an amenable number.

64516070709 is a deficient number, since it is larger than the sum of its proper divisors (30432109527).

64516070709 is a wasteful number, since it uses less digits than its factorization.

64516070709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135253876 (or 135253873 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The spelling of 64516070709 in words is "sixty-four billion, five hundred sixteen million, seventy thousand, seven hundred nine".