16235653121 has 16 divisors (see below), whose sum is σ = 17220840000. Its totient is φ = 15263899200.

The previous prime is 16235653097. The next prime is 16235653139. The reversal of 16235653121 is 12135653261.

It is a cyclic number.

It is not a de Polignac number, because 16235653121 - 2¹⁴ = 16235636737 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16235653171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1711331 + ... + 1720791.

It is an arithmetic number, because the mean of its divisors is an integer number (1076302500).

Almost surely, 2^16235653121 is an apocalyptic number.

It is an amenable number.

16235653121 is a deficient number, since it is larger than the sum of its proper divisors (985186879).

16235653121 is a wasteful number, since it uses less digits than its factorization.

16235653121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10160.

The product of its digits is 32400, while the sum is 35.

The spelling of 16235653121 in words is "sixteen billion, two hundred thirty-five million, six hundred fifty-three thousand, one hundred twenty-one".