16165540546 has 8 divisors (see below), whose sum is σ = 24250118220. Its totient is φ = 8082167808.

The previous prime is 16165540513. The next prime is 16165540549. The reversal of 16165540546 is 64504556161.

It can be written as a sum of positive squares in 2 ways, for example, as 15304411521 + 861129025 = 123711^2 + 29345^2 .

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

It is a super-2 number, since 2×16165540546² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16165540549) 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, 266911 + ... + 321826.

Almost surely, 2^16165540546 is an apocalyptic number.

16165540546 is a deficient number, since it is larger than the sum of its proper divisors (8084577674).

16165540546 is a wasteful number, since it uses less digits than its factorization.

16165540546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602468.

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 16165540546 in words is "sixteen billion, one hundred sixty-five million, five hundred forty thousand, five hundred forty-six".