822136442640 has 40 divisors (see below), whose sum is σ = 2548622972928. Its totient is φ = 219236384640.

The previous prime is 822136442599. The next prime is 822136442641. The reversal of 822136442640 is 46244631228.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 822136442592 and 822136442601.

It is not an unprimeable number, because it can be changed into a prime (822136442641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1712784016 + ... + 1712784495.

Almost surely, 2^822136442640 is an apocalyptic number.

822136442640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

822136442640 is an abundant number, since it is smaller than the sum of its proper divisors (1726486530288).

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

822136442640 is a wasteful number, since it uses less digits than its factorization.

822136442640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3425568527 (or 3425568521 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 42.

The spelling of 822136442640 in words is "eight hundred twenty-two billion, one hundred thirty-six million, four hundred forty-two thousand, six hundred forty".