16134572121 has 8 divisors (see below), whose sum is σ = 21655232064. Its totient is φ = 10685146800.

The previous prime is 16134572099. The next prime is 16134572123. The reversal of 16134572121 is 12127543161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16134572121 - 2¹⁰ = 16134571097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16134572123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17808126 + ... + 17809031.

It is an arithmetic number, because the mean of its divisors is an integer number (2706904008).

Almost surely, 2^16134572121 is an apocalyptic number.

It is an amenable number.

16134572121 is a deficient number, since it is larger than the sum of its proper divisors (5520659943).

16134572121 is a wasteful number, since it uses less digits than its factorization.

16134572121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35617311.

The product of its digits is 10080, while the sum is 33.

The spelling of 16134572121 in words is "sixteen billion, one hundred thirty-four million, five hundred seventy-two thousand, one hundred twenty-one".