64473583202646 has 16 divisors (see below), whose sum is σ = 128952718290624. Its totient is φ = 21490269086664.

The previous prime is 64473583202641. The next prime is 64473583202659. The reversal of 64473583202646 is 64620238537446.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 64473583202646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64473583202641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231177580 + ... + 231456303.

It is an arithmetic number, because the mean of its divisors is an integer number (8059544893164).

Almost surely, 2^{64473583202646} is an apocalyptic number.

64473583202646 is an abundant number, since it is smaller than the sum of its proper divisors (64479135087978).

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

64473583202646 is a wasteful number, since it uses less digits than its factorization.

64473583202646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462657115.

The product of its (nonzero) digits is 139345920, while the sum is 60.

The spelling of 64473583202646 in words is "sixty-four trillion, four hundred seventy-three billion, five hundred eighty-three million, two hundred two thousand, six hundred forty-six".