1220500041544 has 16 divisors (see below), whose sum is σ = 2615357232000. Its totient is φ = 523071446352.

The previous prime is 1220500041521. The next prime is 1220500041559. The reversal of 1220500041544 is 4451400050221.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10897321744 + ... + 10897321855.

It is an arithmetic number, because the mean of its divisors is an integer number (163459827000).

Almost surely, 2^{1220500041544} is an apocalyptic number.

1220500041544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1220500041544 is an abundant number, since it is smaller than the sum of its proper divisors (1394857190456).

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

1220500041544 is a wasteful number, since it uses less digits than its factorization.

1220500041544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21794643612 (or 21794643608 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 1220500041544 its reverse (4451400050221), we get a palindrome (5671900091765).

The spelling of 1220500041544 in words is "one trillion, two hundred twenty billion, five hundred million, forty-one thousand, five hundred forty-four".