1606637216064 has 112 divisors (see below), whose sum is σ = 4326801079680. Its totient is φ = 526038804480.

The previous prime is 1606637216053. The next prime is 1606637216111. The reversal of 1606637216064 is 4606127366061.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3447942 + ... + 3886074.

Almost surely, 2^{1606637216064} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1606637216064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2163400539840).

1606637216064 is an abundant number, since it is smaller than the sum of its proper divisors (2720163863616).

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

1606637216064 is a wasteful number, since it uses less digits than its factorization.

1606637216064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438488 (or 438478 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 48.

The spelling of 1606637216064 in words is "one trillion, six hundred six billion, six hundred thirty-seven million, two hundred sixteen thousand, sixty-four".