16545720216432 has 240 divisors, whose sum is σ = 47636786300544. Its totient is φ = 4944212697600.

The previous prime is 16545720216391. The next prime is 16545720216439. The reversal of 16545720216432 is 23461202754561.

It is a happy number.

16545720216432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16545720216439) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 260764903 + ... + 260828345.

Almost surely, 2^{16545720216432} is an apocalyptic number.

16545720216432 is a gapful number since it is divisible by the number (12) 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 16545720216432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23818393150272).

16545720216432 is an abundant number, since it is smaller than the sum of its proper divisors (31091066084112).

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

16545720216432 is a wasteful number, since it uses less digits than its factorization.

16545720216432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64100 (or 64083 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 48.

The spelling of 16545720216432 in words is "sixteen trillion, five hundred forty-five billion, seven hundred twenty million, two hundred sixteen thousand, four hundred thirty-two".