16121506027 has 24 divisors (see below), whose sum is σ = 18137250432. Its totient is φ = 14313636480.

The previous prime is 16121506001. The next prime is 16121506033. The reversal of 16121506027 is 72060512161.

It is not a de Polignac number, because 16121506027 - 2²⁷ = 15987288299 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16121506027.

It is not an unprimeable number, because it can be changed into a prime (16121506927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1424463 + ... + 1435735.

It is an arithmetic number, because the mean of its divisors is an integer number (755718768).

Almost surely, 2^16121506027 is an apocalyptic number.

16121506027 is a deficient number, since it is larger than the sum of its proper divisors (2015744405).

16121506027 is a wasteful number, since it uses less digits than its factorization.

16121506027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11571 (or 11560 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 16121506027 in words is "sixteen billion, one hundred twenty-one million, five hundred six thousand, twenty-seven".