64658207912 has 48 divisors (see below), whose sum is σ = 123925101300. Its totient is φ = 31627031904.

The previous prime is 64658207909. The next prime is 64658207917. The reversal of 64658207912 is 21970285646.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 64147719076 + 510488836 = 253274^2 + 22594^2 .

It is not an unprimeable number, because it can be changed into a prime (64658207917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 593194514 + ... + 593194622.

Almost surely, 2^64658207912 is an apocalyptic number.

It is an amenable number.

64658207912 is a deficient number, since it is larger than the sum of its proper divisors (59266893388).

64658207912 is an frugal number, since it uses more digits than its factorization.

64658207912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 64658207912 in words is "sixty-four billion, six hundred fifty-eight million, two hundred seven thousand, nine hundred twelve".