16272536230621 has 6 divisors (see below), whose sum is σ = 17886341476766. Its totient is φ = 14793214755000.

The previous prime is 16272536230609. The next prime is 16272536230631. The reversal of 16272536230621 is 12603263527261.

It can be written as a sum of positive squares in only one way, i.e., 16102652121721 + 169884108900 = 4012811^2 + 412170^2 .

It is not a de Polignac number, because 16272536230621 - 2⁹ = 16272536230109 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 (16272536230631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67241885130 + ... + 67241885371.

Almost surely, 2^{16272536230621} is an apocalyptic number.

16272536230621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16272536230621 is a deficient number, since it is larger than the sum of its proper divisors (1613805246145).

16272536230621 is a wasteful number, since it uses less digits than its factorization.

16272536230621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134483770523 (or 134483770512 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 46.

Adding to 16272536230621 its reverse (12603263527261), we get a palindrome (28875799757882).

The spelling of 16272536230621 in words is "sixteen trillion, two hundred seventy-two billion, five hundred thirty-six million, two hundred thirty thousand, six hundred twenty-one".