1520531441240 has 32 divisors (see below), whose sum is σ = 3909937992480. Its totient is φ = 521325065472.

The previous prime is 1520531441141. The next prime is 1520531441243. The reversal of 1520531441240 is 421441350251.

It is a junction number, because it is equal to n+sod(n) for n = 1520531441197 and 1520531441206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520531441243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2715234437 + ... + 2715234996.

It is an arithmetic number, because the mean of its divisors is an integer number (122185562265).

Almost surely, 2^{1520531441240} is an apocalyptic number.

1520531441240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1520531441240 is an abundant number, since it is smaller than the sum of its proper divisors (2389406551240).

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

1520531441240 is a wasteful number, since it uses less digits than its factorization.

1520531441240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5430469451 (or 5430469447 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 1520531441240 its reverse (421441350251), we get a palindrome (1941972791491).

The spelling of 1520531441240 in words is "one trillion, five hundred twenty billion, five hundred thirty-one million, four hundred forty-one thousand, two hundred forty".