16539229427 has 8 divisors (see below), whose sum is σ = 18919310592. Its totient is φ = 14163481800.

The previous prime is 16539229423. The next prime is 16539229439. The reversal of 16539229427 is 72492293561.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 16539229427 - 2² = 16539229423 is a prime.

It is a super-2 number, since 2×16539229427² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16539229423) 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, 1075199 + ... + 1090472.

It is an arithmetic number, because the mean of its divisors is an integer number (2364913824).

Almost surely, 2^16539229427 is an apocalyptic number.

16539229427 is a deficient number, since it is larger than the sum of its proper divisors (2380081165).

16539229427 is a wasteful number, since it uses less digits than its factorization.

16539229427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166769.

The product of its digits is 1632960, while the sum is 50.

The spelling of 16539229427 in words is "sixteen billion, five hundred thirty-nine million, two hundred twenty-nine thousand, four hundred twenty-seven".