819901768050 has 72 divisors (see below), whose sum is σ = 2284388071056. Its totient is φ = 218640468240.

The previous prime is 819901768033. The next prime is 819901768079. The reversal of 819901768050 is 50867109918.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 33728664 + ... + 33752963.

It is an arithmetic number, because the mean of its divisors is an integer number (31727612098).

Almost surely, 2^819901768050 is an apocalyptic number.

819901768050 is an abundant number, since it is smaller than the sum of its proper divisors (1464486303006).

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

819901768050 is a wasteful number, since it uses less digits than its factorization.

819901768050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67481654 (or 67481637 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 54.

The spelling of 819901768050 in words is "eight hundred nineteen billion, nine hundred one million, seven hundred sixty-eight thousand, fifty".