816819862604 has 12 divisors (see below), whose sum is σ = 1513519157304. Its totient is φ = 384385817664.

The previous prime is 816819862603. The next prime is 816819862627. The reversal of 816819862604 is 406268918618.

It is not an unprimeable number, because it can be changed into a prime (816819862603) 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, 6006028334 + ... + 6006028469.

It is an arithmetic number, because the mean of its divisors is an integer number (126126596442).

Almost surely, 2^816819862604 is an apocalyptic number.

It is an amenable number.

816819862604 is a deficient number, since it is larger than the sum of its proper divisors (696699294700).

816819862604 is a wasteful number, since it uses less digits than its factorization.

816819862604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12012056824 (or 12012056822 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 59.

The spelling of 816819862604 in words is "eight hundred sixteen billion, eight hundred nineteen million, eight hundred sixty-two thousand, six hundred four".