16611227372 has 24 divisors (see below), whose sum is σ = 29279093760. Its totient is φ = 8245860480.

The previous prime is 16611227363. The next prime is 16611227377. The reversal of 16611227372 is 27372211661.

It is not an unprimeable number, because it can be changed into a prime (16611227377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 792872 + ... + 813552.

It is an arithmetic number, because the mean of its divisors is an integer number (1219962240).

Almost surely, 2^16611227372 is an apocalyptic number.

It is an amenable number.

16611227372 is a deficient number, since it is larger than the sum of its proper divisors (12667866388).

16611227372 is a wasteful number, since it uses less digits than its factorization.

16611227372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22121 (or 22119 counting only the distinct ones).

The product of its digits is 42336, while the sum is 38.

The spelling of 16611227372 in words is "sixteen billion, six hundred eleven million, two hundred twenty-seven thousand, three hundred seventy-two".