1220790344520 has 32 divisors (see below), whose sum is σ = 3662371033920. Its totient is φ = 325544091840.

The previous prime is 1220790344509. The next prime is 1220790344539. The reversal of 1220790344520 is 254430970221.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5086626316 + ... + 5086626555.

It is an arithmetic number, because the mean of its divisors is an integer number (114449094810).

Almost surely, 2^{1220790344520} is an apocalyptic number.

1220790344520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220790344520 is an abundant number, since it is smaller than the sum of its proper divisors (2441580689400).

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

1220790344520 is a wasteful number, since it uses less digits than its factorization.

1220790344520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10173252885 (or 10173252881 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 1220790344520 in words is "one trillion, two hundred twenty billion, seven hundred ninety million, three hundred forty-four thousand, five hundred twenty".