16218277232 has 20 divisors (see below), whose sum is σ = 31430175840. Its totient is φ = 8107264128.

The previous prime is 16218277211. The next prime is 16218277237. The reversal of 16218277232 is 23277281261.

It is a self number, because there is not a number n which added to its sum of digits gives 16218277232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16218277237) 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, 44408 + ... + 185495.

It is an arithmetic number, because the mean of its divisors is an integer number (1571508792).

Almost surely, 2^16218277232 is an apocalyptic number.

It is an amenable number.

16218277232 is a deficient number, since it is larger than the sum of its proper divisors (15211898608).

16218277232 is a wasteful number, since it uses less digits than its factorization.

16218277232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234320 (or 234314 counting only the distinct ones).

The product of its digits is 112896, while the sum is 41.

The spelling of 16218277232 in words is "sixteen billion, two hundred eighteen million, two hundred seventy-seven thousand, two hundred thirty-two".