16120476811 has 4 divisors (see below), whose sum is σ = 16640492224. Its totient is φ = 15600461400.

The previous prime is 16120476809. The next prime is 16120476833. The reversal of 16120476811 is 11867402161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11867402161 = 23 ⋅515974007.

It is a cyclic number.

It is not a de Polignac number, because 16120476811 - 2¹ = 16120476809 is a prime.

It is a super-2 number, since 2×16120476811² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16120476881) 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, 260007660 + ... + 260007721.

It is an arithmetic number, because the mean of its divisors is an integer number (4160123056).

Almost surely, 2^16120476811 is an apocalyptic number.

16120476811 is a deficient number, since it is larger than the sum of its proper divisors (520015413).

16120476811 is an equidigital number, since it uses as much as digits as its factorization.

16120476811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520015412.

The product of its (nonzero) digits is 16128, while the sum is 37.

Adding to 16120476811 its reverse (11867402161), we get a palindrome (27987878972).

The spelling of 16120476811 in words is "sixteen billion, one hundred twenty million, four hundred seventy-six thousand, eight hundred eleven".