16801020127 has 4 divisors (see below), whose sum is σ = 17085783240. Its totient is φ = 16516257016.

The previous prime is 16801020113. The next prime is 16801020133. The reversal of 16801020127 is 72102010861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72102010861 = 8317 ⋅8669233.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16801020127 is a prime.

It is a super-2 number, since 2×16801020127² (a number of 21 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 = 16801020095 and 16801020104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16801000127) 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, 142381468 + ... + 142381585.

It is an arithmetic number, because the mean of its divisors is an integer number (4271445810).

Almost surely, 2^16801020127 is an apocalyptic number.

16801020127 is a deficient number, since it is larger than the sum of its proper divisors (284763113).

16801020127 is an equidigital number, since it uses as much as digits as its factorization.

16801020127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284763112.

The product of its (nonzero) digits is 1344, while the sum is 28.

Adding to 16801020127 its reverse (72102010861), we get a palindrome (88903030988).

The spelling of 16801020127 in words is "sixteen billion, eight hundred one million, twenty thousand, one hundred twenty-seven".