816210245236 has 12 divisors (see below), whose sum is σ = 1428978620160. Its totient is φ = 407930639480.

The previous prime is 816210245233. The next prime is 816210245293. The reversal of 816210245236 is 632542012618.

It is a super-2 number, since 2×816210245236² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816210245233) 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, 43610260 + ... + 43628971.

It is an arithmetic number, because the mean of its divisors is an integer number (119081551680).

Almost surely, 2^816210245236 is an apocalyptic number.

It is an amenable number.

816210245236 is a deficient number, since it is larger than the sum of its proper divisors (612768374924).

816210245236 is a wasteful number, since it uses less digits than its factorization.

816210245236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87241574 (or 87241572 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 816210245236 in words is "eight hundred sixteen billion, two hundred ten million, two hundred forty-five thousand, two hundred thirty-six".