16049263921 has 8 divisors (see below), whose sum is σ = 16594294784. Its totient is φ = 15505940160.

The previous prime is 16049263891. The next prime is 16049263943. The reversal of 16049263921 is 12936294061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16049263921 - 2⁷ = 16049263793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16049260921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407640 + ... + 445273.

It is an arithmetic number, because the mean of its divisors is an integer number (2074286848).

Almost surely, 2^16049263921 is an apocalyptic number.

It is an amenable number.

16049263921 is a deficient number, since it is larger than the sum of its proper divisors (545030863).

16049263921 is an equidigital number, since it uses as much as digits as its factorization.

16049263921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853551.

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 16049263921 in words is "sixteen billion, forty-nine million, two hundred sixty-three thousand, nine hundred twenty-one".