1022207785686 has 72 divisors (see below), whose sum is σ = 2378744988984. Its totient is φ = 328986282240.

The previous prime is 1022207785609. The next prime is 1022207785777. The reversal of 1022207785686 is 6865877022201.

1022207785686 is a `hidden beast` number, since 1 + 0 + 2 + 2 + 2 + 0 + 7 + 78 + 568 + 6 = 666.

1022207785686 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 841755 + ... + 1659206.

It is an arithmetic number, because the mean of its divisors is an integer number (33038124847).

Almost surely, 2^{1022207785686} is an apocalyptic number.

1022207785686 is an abundant number, since it is smaller than the sum of its proper divisors (1356537203298).

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

1022207785686 is an equidigital number, since it uses as much as digits as its factorization.

1022207785686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501036 (or 2500995 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The spelling of 1022207785686 in words is "one trillion, twenty-two billion, two hundred seven million, seven hundred eighty-five thousand, six hundred eighty-six".