1521135240312 has 32 divisors (see below), whose sum is σ = 3839758865280. Its totient is φ = 502122311520.

The previous prime is 1521135240311. The next prime is 1521135240347. The reversal of 1521135240312 is 2130425311251.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1521135240312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1521135240311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307670514 + ... + 307675457.

It is an arithmetic number, because the mean of its divisors is an integer number (119992464540).

Almost surely, 2^{1521135240312} is an apocalyptic number.

1521135240312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1521135240312 is an abundant number, since it is smaller than the sum of its proper divisors (2318623624968).

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

1521135240312 is a wasteful number, since it uses less digits than its factorization.

1521135240312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615346083 (or 615346079 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 1521135240312 in words is "one trillion, five hundred twenty-one billion, one hundred thirty-five million, two hundred forty thousand, three hundred twelve".