16466215516 has 6 divisors (see below), whose sum is σ = 28815877160. Its totient is φ = 8233107756.

The previous prime is 16466215511. The next prime is 16466215543. The reversal of 16466215516 is 61551266461.

It is a super-2 number, since 2×16466215516² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16466215511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2058276936 + ... + 2058276943.

Almost surely, 2^16466215516 is an apocalyptic number.

It is an amenable number.

16466215516 is a deficient number, since it is larger than the sum of its proper divisors (12349661644).

16466215516 is a wasteful number, since it uses less digits than its factorization.

16466215516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4116553883 (or 4116553881 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The spelling of 16466215516 in words is "sixteen billion, four hundred sixty-six million, two hundred fifteen thousand, five hundred sixteen".