21822061303856 has 40 divisors (see below), whose sum is σ = 46124240605200. Its totient is φ = 9919046021120.

The previous prime is 21822061303831. The next prime is 21822061303877. The reversal of 21822061303856 is 65830316022812.

It is a self number, because there is not a number n which added to its sum of digits gives 21822061303856.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29022380 + ... + 29764788.

It is an arithmetic number, because the mean of its divisors is an integer number (1153106015130).

Almost surely, 2^{21822061303856} is an apocalyptic number.

It is an amenable number.

21822061303856 is an abundant number, since it is smaller than the sum of its proper divisors (24302179301344).

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

21822061303856 is a wasteful number, since it uses less digits than its factorization.

21822061303856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909437 (or 909431 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 21822061303856 in words is "twenty-one trillion, eight hundred twenty-two billion, sixty-one million, three hundred three thousand, eight hundred fifty-six".