16465543992 has 24 divisors (see below), whose sum is σ = 44594181840. Its totient is φ = 5488514640.

The previous prime is 16465543951. The next prime is 16465543993. The reversal of 16465543992 is 29934556461.

16465543992 is a `hidden beast` number, since 1 + 6 + 4 + 6 + 5 + 543 + 9 + 92 = 666.

16465543992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×16465543992² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16465543993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 114343984 + ... + 114344127.

It is an arithmetic number, because the mean of its divisors is an integer number (1858090910).

Almost surely, 2^16465543992 is an apocalyptic number.

16465543992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16465543992 is an abundant number, since it is smaller than the sum of its proper divisors (28128637848).

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

16465543992 is a wasteful number, since it uses less digits than its factorization.

16465543992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228688123 (or 228688116 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 54.

The spelling of 16465543992 in words is "sixteen billion, four hundred sixty-five million, five hundred forty-three thousand, nine hundred ninety-two".