16326651021261 has 16 divisors (see below), whose sum is σ = 24881900649600. Its totient is φ = 9328316995008.

The previous prime is 16326651021259. The next prime is 16326651021283. The reversal of 16326651021261 is 16212015662361.

It is not a de Polignac number, because 16326651021261 - 2¹ = 16326651021259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16326651021251) 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 15 ways as a sum of consecutive naturals, for example, 49743966 + ... + 50071103.

It is an arithmetic number, because the mean of its divisors is an integer number (1555118790600).

Almost surely, 2^{16326651021261} is an apocalyptic number.

It is an amenable number.

16326651021261 is a deficient number, since it is larger than the sum of its proper divisors (8555249628339).

16326651021261 is an equidigital number, since it uses as much as digits as its factorization.

16326651021261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99822868.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 16326651021261 in words is "sixteen trillion, three hundred twenty-six billion, six hundred fifty-one million, twenty-one thousand, two hundred sixty-one".