16545123120131 has 4 divisors (see below), whose sum is σ = 16897147016352. Its totient is φ = 16193099223912.

The previous prime is 16545123120103. The next prime is 16545123120137. The reversal of 16545123120131 is 13102132154561.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16545123120131 - 2¹⁸ = 16545122857987 is a prime.

It is a super-2 number, since 2×16545123120131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16545123120091 and 16545123120100.

It is not an unprimeable number, because it can be changed into a prime (16545123120137) 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, 176011948040 + ... + 176011948133.

It is an arithmetic number, because the mean of its divisors is an integer number (4224286754088).

Almost surely, 2^{16545123120131} is an apocalyptic number.

16545123120131 is a deficient number, since it is larger than the sum of its proper divisors (352023896221).

16545123120131 is an equidigital number, since it uses as much as digits as its factorization.

16545123120131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352023896220.

The product of its (nonzero) digits is 21600, while the sum is 35.

Adding to 16545123120131 its reverse (13102132154561), we get a palindrome (29647255274692).

The spelling of 16545123120131 in words is "sixteen trillion, five hundred forty-five billion, one hundred twenty-three million, one hundred twenty thousand, one hundred thirty-one".