1520210244144 has 160 divisors (see below), whose sum is σ = 4039067197440. Its totient is φ = 492429176064.

The previous prime is 1520210244143. The next prime is 1520210244151. The reversal of 1520210244144 is 4414420120251.

It is a super-2 number, since 2×1520210244144² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1520210244143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 598742427 + ... + 598744965.

It is an arithmetic number, because the mean of its divisors is an integer number (25244169984).

Almost surely, 2^{1520210244144} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1520210244144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2019533598720).

1520210244144 is an abundant number, since it is smaller than the sum of its proper divisors (2518856953296).

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

1520210244144 is a wasteful number, since it uses less digits than its factorization.

1520210244144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3959 (or 3953 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

Adding to 1520210244144 its reverse (4414420120251), we get a palindrome (5934630364395).

The spelling of 1520210244144 in words is "one trillion, five hundred twenty billion, two hundred ten million, two hundred forty-four thousand, one hundred forty-four".