16165575044 has 6 divisors (see below), whose sum is σ = 28289756334. Its totient is φ = 8082787520.

The previous prime is 16165575011. The next prime is 16165575059. The reversal of 16165575044 is 44057556161.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10970048644 + 5195526400 = 104738^2 + 72080^2 .

It is a super-2 number, since 2×16165575044² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16165574986 and 16165575004.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2020696877 + ... + 2020696884.

It is an arithmetic number, because the mean of its divisors is an integer number (4714959389).

Almost surely, 2^16165575044 is an apocalyptic number.

It is an amenable number.

16165575044 is a deficient number, since it is larger than the sum of its proper divisors (12124181290).

16165575044 is a wasteful number, since it uses less digits than its factorization.

16165575044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4041393765 (or 4041393763 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 44.

The spelling of 16165575044 in words is "sixteen billion, one hundred sixty-five million, five hundred seventy-five thousand, forty-four".