1220955494584 has 64 divisors (see below), whose sum is σ = 2643030835200. Its totient is φ = 517946171904.

The previous prime is 1220955494573. The next prime is 1220955494593. The reversal of 1220955494584 is 4854945590221.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 2881257 + ... + 3277735.

It is an arithmetic number, because the mean of its divisors is an integer number (41297356800).

Almost surely, 2^{1220955494584} is an apocalyptic number.

1220955494584 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1220955494584 is an abundant number, since it is smaller than the sum of its proper divisors (1422075340616).

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

1220955494584 is a wasteful number, since it uses less digits than its factorization.

1220955494584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397052 (or 397048 counting only the distinct ones).

The product of its (nonzero) digits is 20736000, while the sum is 58.

The spelling of 1220955494584 in words is "one trillion, two hundred twenty billion, nine hundred fifty-five million, four hundred ninety-four thousand, five hundred eighty-four".