16165521635044 has 12 divisors (see below), whose sum is σ = 28289779772464. Its totient is φ = 8082727414344.

The previous prime is 16165521635041. The next prime is 16165521635093. The reversal of 16165521635044 is 44053612556161.

It is a super-2 number, since 2×16165521635044² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16165521635041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7245654 + ... + 9210349.

Almost surely, 2^{16165521635044} is an apocalyptic number.

It is an amenable number.

16165521635044 is a deficient number, since it is larger than the sum of its proper divisors (12124258137420).

16165521635044 is a wasteful number, since it uses less digits than its factorization.

16165521635044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16701594 (or 16701592 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 49.

The spelling of 16165521635044 in words is "sixteen trillion, one hundred sixty-five billion, five hundred twenty-one million, six hundred thirty-five thousand, forty-four".