1220934757855 has 16 divisors (see below), whose sum is σ = 1469977236000. Its totient is φ = 973513296000.

The previous prime is 1220934757817. The next prime is 1220934757879. The reversal of 1220934757855 is 5587574390221.

It is not a de Polignac number, because 1220934757855 - 2¹³ = 1220934749663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1220934757855.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3772581 + ... + 4083409.

It is an arithmetic number, because the mean of its divisors is an integer number (91873577250).

Almost surely, 2^{1220934757855} is an apocalyptic number.

1220934757855 is a deficient number, since it is larger than the sum of its proper divisors (249042478145).

1220934757855 is a wasteful number, since it uses less digits than its factorization.

1220934757855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313434.

The product of its (nonzero) digits is 21168000, while the sum is 58.

The spelling of 1220934757855 in words is "one trillion, two hundred twenty billion, nine hundred thirty-four million, seven hundred fifty-seven thousand, eight hundred fifty-five".