16215820466 has 16 divisors (see below), whose sum is σ = 24990587520. Its totient is φ = 7885790640.

The previous prime is 16215820463. The next prime is 16215820469. The reversal of 16215820466 is 66402851261.

It is an interprime number because it is at equal distance from previous prime (16215820463) and next prime (16215820469).

It is not an unprimeable number, because it can be changed into a prime (16215820463) 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, 161975 + ... + 242213.

It is an arithmetic number, because the mean of its divisors is an integer number (1561911720).

Almost surely, 2^16215820466 is an apocalyptic number.

16215820466 is a deficient number, since it is larger than the sum of its proper divisors (8774767054).

16215820466 is a wasteful number, since it uses less digits than its factorization.

16215820466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83009.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 16215820466 in words is "sixteen billion, two hundred fifteen million, eight hundred twenty thousand, four hundred sixty-six".