16164623103531 has 24 divisors (see below), whose sum is σ = 25075968756624. Its totient is φ = 9235340170560.

The previous prime is 16164623103521. The next prime is 16164623103617. The reversal of 16164623103531 is 13530132646161.

It is not a de Polignac number, because 16164623103531 - 2⁶ = 16164623103467 is a prime.

It is a super-2 number, since 2×16164623103531² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16164623103521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8589720 + ... + 10301093.

It is an arithmetic number, because the mean of its divisors is an integer number (1044832031526).

Almost surely, 2^{16164623103531} is an apocalyptic number.

16164623103531 is a deficient number, since it is larger than the sum of its proper divisors (8911345653093).

16164623103531 is a wasteful number, since it uses less digits than its factorization.

16164623103531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18896651 (or 18896644 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

Adding to 16164623103531 its reverse (13530132646161), we get a palindrome (29694755749692).

The spelling of 16164623103531 in words is "sixteen trillion, one hundred sixty-four billion, six hundred twenty-three million, one hundred three thousand, five hundred thirty-one".