16212499437 has 4 divisors (see below), whose sum is σ = 21616665920. Its totient is φ = 10808332956.

The previous prime is 16212499399. The next prime is 16212499439. The reversal of 16212499437 is 73499421261.

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 not a de Polignac number, because 16212499437 - 2¹⁰ = 16212498413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16212499439) 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, 2702083237 + ... + 2702083242.

It is an arithmetic number, because the mean of its divisors is an integer number (5404166480).

Almost surely, 2^16212499437 is an apocalyptic number.

It is an amenable number.

16212499437 is a deficient number, since it is larger than the sum of its proper divisors (5404166483).

16212499437 is an equidigital number, since it uses as much as digits as its factorization.

16212499437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5404166482.

The product of its digits is 653184, while the sum is 48.

The spelling of 16212499437 in words is "sixteen billion, two hundred twelve million, four hundred ninety-nine thousand, four hundred thirty-seven".