16373545364646 has 96 divisors (see below), whose sum is σ = 38072971067040. Its totient is φ = 5267651429376.

The previous prime is 16373545364569. The next prime is 16373545364689. The reversal of 16373545364646 is 64646354537361.

It is a happy number.

16373545364646 is a `hidden beast` number, since 1 + 6 + 3 + 7 + 3 + 54 + 536 + 4 + 6 + 46 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37229140 + ... + 37666376.

It is an arithmetic number, because the mean of its divisors is an integer number (396593448615).

Almost surely, 2^{16373545364646} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16373545364646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19036485533520).

16373545364646 is an abundant number, since it is smaller than the sum of its proper divisors (21699425702394).

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

16373545364646 is a wasteful number, since it uses less digits than its factorization.

16373545364646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439940 (or 439928 counting only the distinct ones).

The product of its digits is 391910400, while the sum is 63.

The spelling of 16373545364646 in words is "sixteen trillion, three hundred seventy-three billion, five hundred forty-five million, three hundred sixty-four thousand, six hundred forty-six".