16443032461 has 4 divisors (see below), whose sum is σ = 16511832000. Its totient is φ = 16374232924.

The previous prime is 16443032381. The next prime is 16443032537. The reversal of 16443032461 is 16423034461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16443032461 - 2²⁹ = 15906161549 is a prime.

It is a super-3 number, since 3×16443032461³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16443032261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34399411 + ... + 34399888.

It is an arithmetic number, because the mean of its divisors is an integer number (4127958000).

Almost surely, 2^16443032461 is an apocalyptic number.

It is an amenable number.

16443032461 is a deficient number, since it is larger than the sum of its proper divisors (68799539).

16443032461 is an equidigital number, since it uses as much as digits as its factorization.

16443032461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68799538.

The product of its (nonzero) digits is 41472, while the sum is 34.

The spelling of 16443032461 in words is "sixteen billion, four hundred forty-three million, thirty-two thousand, four hundred sixty-one".