1523441213220 has 48 divisors (see below), whose sum is σ = 4265692861248. Its totient is φ = 406245517440.

The previous prime is 1523441213219. The next prime is 1523441213227. The reversal of 1523441213220 is 223121443251.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1523441213227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6417850 + ... + 6650990.

It is an arithmetic number, because the mean of its divisors is an integer number (88868601276).

Almost surely, 2^{1523441213220} is an apocalyptic number.

1523441213220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1523441213220 is an abundant number, since it is smaller than the sum of its proper divisors (2742251648028).

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

1523441213220 is a wasteful number, since it uses less digits than its factorization.

1523441213220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342060 (or 342058 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 1523441213220 its reverse (223121443251), we get a palindrome (1746562656471).

The spelling of 1523441213220 in words is "one trillion, five hundred twenty-three billion, four hundred forty-one million, two hundred thirteen thousand, two hundred twenty".