823202778060 has 120 divisors (see below), whose sum is σ = 2781065182896. Its totient is φ = 202634524800.

The previous prime is 823202778031. The next prime is 823202778067. The reversal of 823202778060 is 60877202328.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 823202777997 and 823202778015.

It is not an unprimeable number, because it can be changed into a prime (823202778067) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19523166 + ... + 19565285.

Almost surely, 2^823202778060 is an apocalyptic number.

It is an amenable number.

823202778060 is an abundant number, since it is smaller than the sum of its proper divisors (1957862404836).

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

823202778060 is a wasteful number, since it uses less digits than its factorization.

823202778060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39088485 (or 39088474 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 823202778060 in words is "eight hundred twenty-three billion, two hundred two million, seven hundred seventy-eight thousand, sixty".