16135449717725 has 24 divisors (see below), whose sum is σ = 22483858774272. Its totient is φ = 11397347755200.

The previous prime is 16135449717707. The next prime is 16135449717757. The reversal of 16135449717725 is 52771794453161.

It is a happy number.

It is not a de Polignac number, because 16135449717725 - 2¹⁴ = 16135449701341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1079286821 + ... + 1079301770.

It is an arithmetic number, because the mean of its divisors is an integer number (936827448928).

Almost surely, 2^{16135449717725} is an apocalyptic number.

It is an amenable number.

16135449717725 is a deficient number, since it is larger than the sum of its proper divisors (6348409056547).

16135449717725 is a wasteful number, since it uses less digits than its factorization.

16135449717725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2158588637 (or 2158588632 counting only the distinct ones).

The product of its digits is 44452800, while the sum is 62.

The spelling of 16135449717725 in words is "sixteen trillion, one hundred thirty-five billion, four hundred forty-nine million, seven hundred seventeen thousand, seven hundred twenty-five".