1646264064016 has 80 divisors (see below), whose sum is σ = 3750877428480. Its totient is φ = 690074357760.

The previous prime is 1646264063929. The next prime is 1646264064019. The reversal of 1646264064016 is 6104604626461.

It is not an unprimeable number, because it can be changed into a prime (1646264064019) 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, 2030976 + ... + 2723488.

It is an arithmetic number, because the mean of its divisors is an integer number (46885967856).

Almost surely, 2^{1646264064016} is an apocalyptic number.

1646264064016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1646264064016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1875438714240).

1646264064016 is an abundant number, since it is smaller than the sum of its proper divisors (2104613364464).

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

1646264064016 is a wasteful number, since it uses less digits than its factorization.

1646264064016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693584 (or 693578 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 46.

The spelling of 1646264064016 in words is "one trillion, six hundred forty-six billion, two hundred sixty-four million, sixty-four thousand, sixteen".