1220636427696 has 90 divisors (see below), whose sum is σ = 3973815127932. Its totient is φ = 348753263040.

The previous prime is 1220636427679. The next prime is 1220636427697. The reversal of 1220636427696 is 6967246360221.

1220636427696 is a `hidden beast` number, since 1 + 2 + 2 + 0 + 6 + 364 + 276 + 9 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (1220636427697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 86489290 + ... + 86503401.

Almost surely, 2^{1220636427696} is an apocalyptic number.

1220636427696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1220636427696 is an abundant number, since it is smaller than the sum of its proper divisors (2753178700236).

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

1220636427696 is a wasteful number, since it uses less digits than its factorization.

1220636427696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172992719 (or 172992703 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 54.

The spelling of 1220636427696 in words is "one trillion, two hundred twenty billion, six hundred thirty-six million, four hundred twenty-seven thousand, six hundred ninety-six".