16545175113621 has 32 divisors (see below), whose sum is σ = 27503873261568. Its totient is φ = 8594831931840.

The previous prime is 16545175113611. The next prime is 16545175113637. The reversal of 16545175113621 is 12631157154561.

It is a happy number.

It is not a de Polignac number, because 16545175113621 - 2¹⁴ = 16545175097237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16545175113611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61388460 + ... + 61657386.

It is an arithmetic number, because the mean of its divisors is an integer number (859496039424).

Almost surely, 2^{16545175113621} is an apocalyptic number.

16545175113621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16545175113621 is a deficient number, since it is larger than the sum of its proper divisors (10958698147947).

16545175113621 is a wasteful number, since it uses less digits than its factorization.

16545175113621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535281.

The product of its digits is 756000, while the sum is 48.

The spelling of 16545175113621 in words is "sixteen trillion, five hundred forty-five billion, one hundred seventy-five million, one hundred thirteen thousand, six hundred twenty-one".