64485376209 has 32 divisors (see below), whose sum is σ = 95751384960. Its totient is φ = 42892524864.

The previous prime is 64485376201. The next prime is 64485376231. The reversal of 64485376209 is 90267358446.

64485376209 is a `hidden beast` number, since 6 + 4 + 4 + 8 + 5 + 3 + 7 + 620 + 9 = 666.

It is not a de Polignac number, because 64485376209 - 2³ = 64485376201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64485376201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38088567 + ... + 38090259.

It is an arithmetic number, because the mean of its divisors is an integer number (2992230780).

Almost surely, 2^64485376209 is an apocalyptic number.

It is an amenable number.

64485376209 is a deficient number, since it is larger than the sum of its proper divisors (31266008751).

64485376209 is a wasteful number, since it uses less digits than its factorization.

64485376209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4078 (or 4072 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 54.

The spelling of 64485376209 in words is "sixty-four billion, four hundred eighty-five million, three hundred seventy-six thousand, two hundred nine".