816412996850 has 36 divisors (see below), whose sum is σ = 1669126021962. Its totient is φ = 296877451200.

The previous prime is 816412996837. The next prime is 816412996891. The reversal of 816412996850 is 58699214618.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 693444249289 + 122968747561 = 832733^2 + 350669^2 .

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 816412996850.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 67466099 + ... + 67478198.

Almost surely, 2^816412996850 is an apocalyptic number.

816412996850 is an abundant number, since it is smaller than the sum of its proper divisors (852713025112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

816412996850 is a wasteful number, since it uses less digits than its factorization.

816412996850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134944331 (or 134944315 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 59.

The spelling of 816412996850 in words is "eight hundred sixteen billion, four hundred twelve million, nine hundred ninety-six thousand, eight hundred fifty".