1022446778820 has 48 divisors (see below), whose sum is σ = 2863148386560. Its totient is φ = 272624150016.

The previous prime is 1022446778809. The next prime is 1022446778827. The reversal of 1022446778820 is 288776442201.

It is not an unprimeable number, because it can be changed into a prime (1022446778827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299557 + ... + 1461036.

It is an arithmetic number, because the mean of its divisors is an integer number (59648924720).

Almost surely, 2^{1022446778820} is an apocalyptic number.

1022446778820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022446778820 is an abundant number, since it is smaller than the sum of its proper divisors (1840701607740).

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

1022446778820 is a wasteful number, since it uses less digits than its factorization.

1022446778820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770284 (or 1770282 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 51.

The spelling of 1022446778820 in words is "one trillion, twenty-two billion, four hundred forty-six million, seven hundred seventy-eight thousand, eight hundred twenty".