819740282550 has 96 divisors (see below), whose sum is σ = 2424394685952. Its totient is φ = 179222714880.

The previous prime is 819740282549. The next prime is 819740282563. The reversal of 819740282550 is 55282047918.

It is a junction number, because it is equal to n+sod(n) for n = 819740282493 and 819740282502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16947699 + ... + 16995998.

It is an arithmetic number, because the mean of its divisors is an integer number (25254111312).

Almost surely, 2^819740282550 is an apocalyptic number.

819740282550 is an abundant number, since it is smaller than the sum of its proper divisors (1604654403402).

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

819740282550 is a wasteful number, since it uses less digits than its factorization.

819740282550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33943742 (or 33943737 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 51.

The spelling of 819740282550 in words is "eight hundred nineteen billion, seven hundred forty million, two hundred eighty-two thousand, five hundred fifty".