16528406046389 has 4 divisors (see below), whose sum is σ = 17247032396256. Its totient is φ = 15809779696524.

The previous prime is 16528406046311. The next prime is 16528406046517. The reversal of 16528406046389 is 98364060482561.

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 a de Polignac number, because none of the positive numbers 2^k-16528406046389 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 (16528406042389) 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, 359313174899 + ... + 359313174944.

It is an arithmetic number, because the mean of its divisors is an integer number (4311758099064).

Almost surely, 2^{16528406046389} is an apocalyptic number.

It is an amenable number.

16528406046389 is a deficient number, since it is larger than the sum of its proper divisors (718626349867).

16528406046389 is an equidigital number, since it uses as much as digits as its factorization.

16528406046389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718626349866.

The product of its (nonzero) digits is 59719680, while the sum is 62.

The spelling of 16528406046389 in words is "sixteen trillion, five hundred twenty-eight billion, four hundred six million, forty-six thousand, three hundred eighty-nine".