64565650212 has 48 divisors (see below), whose sum is σ = 172341012480. Its totient is φ = 18429548832.

The previous prime is 64565650211. The next prime is 64565650267. The reversal of 64565650212 is 21205656546.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (64565650211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 282618 + ... + 457169.

It is an arithmetic number, because the mean of its divisors is an integer number (3590437760).

Almost surely, 2^64565650212 is an apocalyptic number.

It is an amenable number.

64565650212 is an abundant number, since it is smaller than the sum of its proper divisors (107775362268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64565650212 is a wasteful number, since it uses less digits than its factorization.

64565650212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740840 (or 740838 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 64565650212 in words is "sixty-four billion, five hundred sixty-five million, six hundred fifty thousand, two hundred twelve".