16216691272 has 32 divisors (see below), whose sum is σ = 32203876320. Its totient is φ = 7629256960.

The previous prime is 16216691269. The next prime is 16216691287. The reversal of 16216691272 is 27219661261.

It is a super-2 number, since 2×16216691272² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541803 + ... + 570949.

It is an arithmetic number, because the mean of its divisors is an integer number (1006371135).

Almost surely, 2^16216691272 is an apocalyptic number.

It is an amenable number.

16216691272 is a deficient number, since it is larger than the sum of its proper divisors (15987185048).

16216691272 is a wasteful number, since it uses less digits than its factorization.

16216691272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33261 (or 33257 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The spelling of 16216691272 in words is "sixteen billion, two hundred sixteen million, six hundred ninety-one thousand, two hundred seventy-two".