16653973787136 has 2160 divisors, whose sum is σ = 62470360016064. Its totient is φ = 4411719696384.

The previous prime is 16653973787123. The next prime is 16653973787137. The reversal of 16653973787136 is 63178737935661.

16653973787136 is a `hidden beast` number, since 1 + 6 + 6 + 539 + 7 + 3 + 7 + 87 + 1 + 3 + 6 = 666.

It is a super-2 number, since 2×16653973787136² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (16653973787137) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 200650286551 + ... + 200650286633.

Almost surely, 2^{16653973787136} is an apocalyptic number.

16653973787136 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 16653973787136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31235180008032).

16653973787136 is an abundant number, since it is smaller than the sum of its proper divisors (45816386228928).

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

16653973787136 is an frugal number, since it uses more digits than its factorization.

16653973787136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 171 counting only the distinct ones).

The product of its digits is 720135360, while the sum is 72.

The spelling of 16653973787136 in words is "sixteen trillion, six hundred fifty-three billion, nine hundred seventy-three million, seven hundred eighty-seven thousand, one hundred thirty-six".