16601507228 has 12 divisors (see below), whose sum is σ = 29072642760.
Its totient is φ = 8295037872.
The previous prime is 16601507227. The next prime is 16601507231. The reversal of 16601507228 is 82270510661.
It is a super-2 number, since 2×166015072282 (a number of 21 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 16601507191 and 16601507200.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (16601507227) 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, 1422398 + ... + 1434021.
It is an arithmetic number, because the mean of its divisors is an integer number (2422720230).
Almost surely, 216601507228 is an apocalyptic number.
It is an amenable number.
16601507228 is a deficient number, since it is larger than the sum of its proper divisors (12471135532).
16601507228 is a wasteful number, since it uses less digits than its factorization.
16601507228 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2857876 (or 2857874 counting only the distinct ones).
The product of its (nonzero) digits is 40320, while the sum is 38.
The spelling of 16601507228 in words is "sixteen billion, six hundred one million, five hundred seven thousand, two hundred twenty-eight".