816500910242 has 16 divisors (see below), whose sum is σ = 1289416622400. Its totient is φ = 386702191440.

The previous prime is 816500910193. The next prime is 816500910257. The reversal of 816500910242 is 242019005618.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 816500910196 and 816500910205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1462517 + ... + 1942152.

It is an arithmetic number, because the mean of its divisors is an integer number (80588538900).

Almost surely, 2^816500910242 is an apocalyptic number.

816500910242 is a deficient number, since it is larger than the sum of its proper divisors (472915712158).

816500910242 is a wasteful number, since it uses less digits than its factorization.

816500910242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3411001.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 816500910242 in words is "eight hundred sixteen billion, five hundred million, nine hundred ten thousand, two hundred forty-two".