16236155121 has 4 divisors (see below), whose sum is σ = 21648206832. Its totient is φ = 10824103412.

The previous prime is 16236155119. The next prime is 16236155137. The reversal of 16236155121 is 12155163261.

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 not a de Polignac number, because 16236155121 - 2¹ = 16236155119 is a prime.

It is a super-2 number, since 2×16236155121² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16236155161) 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, 2706025851 + ... + 2706025856.

It is an arithmetic number, because the mean of its divisors is an integer number (5412051708).

Almost surely, 2^16236155121 is an apocalyptic number.

It is an amenable number.

16236155121 is a deficient number, since it is larger than the sum of its proper divisors (5412051711).

16236155121 is an equidigital number, since it uses as much as digits as its factorization.

16236155121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5412051710.

The product of its digits is 10800, while the sum is 33.

The spelling of 16236155121 in words is "sixteen billion, two hundred thirty-six million, one hundred fifty-five thousand, one hundred twenty-one".