16404165132437 has 4 divisors (see below), whose sum is σ = 16404188030880. Its totient is φ = 16404142233996.

The previous prime is 16404165132413. The next prime is 16404165132479. The reversal of 16404165132437 is 73423156140461.

It is a happy number.

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 16404165132437 - 2⁸ = 16404165132181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16404165132391 and 16404165132400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16404165132637) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10338737 + ... + 11819382.

It is an arithmetic number, because the mean of its divisors is an integer number (4101047007720).

Almost surely, 2^{16404165132437} is an apocalyptic number.

It is an amenable number.

16404165132437 is a deficient number, since it is larger than the sum of its proper divisors (22898443).

16404165132437 is an equidigital number, since it uses as much as digits as its factorization.

16404165132437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22898442.

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 16404165132437 in words is "sixteen trillion, four hundred four billion, one hundred sixty-five million, one hundred thirty-two thousand, four hundred thirty-seven".