1220823649483 has 4 divisors (see below), whose sum is σ = 1228313365288. Its totient is φ = 1213333933680.

The previous prime is 1220823649469. The next prime is 1220823649531. The reversal of 1220823649483 is 3849463280221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220823649483 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220823649483.

It is not an unprimeable number, because it can be changed into a prime (1220823641483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3744857658 + ... + 3744857983.

It is an arithmetic number, because the mean of its divisors is an integer number (307078341322).

Almost surely, 2^{1220823649483} is an apocalyptic number.

1220823649483 is a deficient number, since it is larger than the sum of its proper divisors (7489715805).

1220823649483 is an equidigital number, since it uses as much as digits as its factorization.

1220823649483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7489715804.

The product of its (nonzero) digits is 3981312, while the sum is 52.

The spelling of 1220823649483 in words is "one trillion, two hundred twenty billion, eight hundred twenty-three million, six hundred forty-nine thousand, four hundred eighty-three".