16572727018 has 12 divisors (see below), whose sum is σ = 24886592550. Its totient is φ = 8277206160.

The previous prime is 16572727001. The next prime is 16572727021. The reversal of 16572727018 is 81072727561.

It can be written as a sum of positive squares in 3 ways, for example, as 14923798569 + 1648928449 = 122163^2 + 40607^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2080908 + ... + 2088856.

Almost surely, 2^16572727018 is an apocalyptic number.

16572727018 is a deficient number, since it is larger than the sum of its proper divisors (8313865532).

16572727018 is an frugal number, since it uses more digits than its factorization.

16572727018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9993 (or 8972 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 46.

It can be divided in two parts, 16572 and 727018, that added together give a triangular number (743590 = T₁₂₁₉).

The spelling of 16572727018 in words is "sixteen billion, five hundred seventy-two million, seven hundred twenty-seven thousand, eighteen".