16121833428 has 12 divisors (see below), whose sum is σ = 37617611360. Its totient is φ = 5373944472.

The previous prime is 16121833423. The next prime is 16121833447. The reversal of 16121833428 is 82433812161.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16121833423) 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, 671743048 + ... + 671743071.

Almost surely, 2^16121833428 is an apocalyptic number.

It is an amenable number.

16121833428 is an abundant number, since it is smaller than the sum of its proper divisors (21495777932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16121833428 is a wasteful number, since it uses less digits than its factorization.

16121833428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343486126 (or 1343486124 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The spelling of 16121833428 in words is "sixteen billion, one hundred twenty-one million, eight hundred thirty-three thousand, four hundred twenty-eight".