16251107128 has 8 divisors (see below), whose sum is σ = 30470825880. Its totient is φ = 8125553560.

The previous prime is 16251107123. The next prime is 16251107129. The reversal of 16251107128 is 82170115261.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 16251107093 and 16251107102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16251107123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015694188 + ... + 1015694203.

It is an arithmetic number, because the mean of its divisors is an integer number (3808853235).

Almost surely, 2^16251107128 is an apocalyptic number.

It is an amenable number.

16251107128 is a deficient number, since it is larger than the sum of its proper divisors (14219718752).

16251107128 is a wasteful number, since it uses less digits than its factorization.

16251107128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031388397 (or 2031388393 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 34.

The spelling of 16251107128 in words is "sixteen billion, two hundred fifty-one million, one hundred seven thousand, one hundred twenty-eight".