16258051321 has 4 divisors (see below), whose sum is σ = 16258307472. Its totient is φ = 16257795172.

The previous prime is 16258051297. The next prime is 16258051333. The reversal of 16258051321 is 12315085261.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 16258051321 - 2⁵ = 16258051289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16258051351) 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, 45966 + ... + 186088.

It is an arithmetic number, because the mean of its divisors is an integer number (4064576868).

Almost surely, 2^16258051321 is an apocalyptic number.

It is an amenable number.

16258051321 is a deficient number, since it is larger than the sum of its proper divisors (256151).

16258051321 is a wasteful number, since it uses less digits than its factorization.

16258051321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256150.

The product of its (nonzero) digits is 14400, while the sum is 34.

The spelling of 16258051321 in words is "sixteen billion, two hundred fifty-eight million, fifty-one thousand, three hundred twenty-one".