2016161112251 has 12 divisors (see below), whose sum is σ = 2386581051456. Its totient is φ = 1691883449520.

The previous prime is 2016161112241. The next prime is 2016161112257. The reversal of 2016161112251 is 1522111616102.

It is not a de Polignac number, because 2016161112251 - 2³⁸ = 1741283205307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2016161112257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 640863371 + ... + 640866516.

It is an arithmetic number, because the mean of its divisors is an integer number (198881754288).

Almost surely, 2^{2016161112251} is an apocalyptic number.

2016161112251 is a deficient number, since it is larger than the sum of its proper divisors (370419939205).

2016161112251 is a wasteful number, since it uses less digits than its factorization.

2016161112251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281729922 (or 1281729911 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 29.

Adding to 2016161112251 its reverse (1522111616102), we get a palindrome (3538272728353).

The spelling of 2016161112251 in words is "two trillion, sixteen billion, one hundred sixty-one million, one hundred twelve thousand, two hundred fifty-one".