12510313015440 has 40 divisors (see below), whose sum is σ = 38781970348608. Its totient is φ = 3336083470720.

The previous prime is 12510313015433. The next prime is 12510313015469. The reversal of 12510313015440 is 4451031301521.

It is a tau number, because it is divible by the number of its divisors (40).

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

It is a junction number, because it is equal to n+sod(n) for n = 12510313015398 and 12510313015407.

It is an unprimeable number.

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, 26063151876 + ... + 26063152355.

Almost surely, 2^{12510313015440} is an apocalyptic number.

12510313015440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12510313015440 is an abundant number, since it is smaller than the sum of its proper divisors (26271657333168).

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

12510313015440 is a wasteful number, since it uses less digits than its factorization.

12510313015440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52126304247 (or 52126304241 counting only the distinct ones).

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

Adding to 12510313015440 its reverse (4451031301521), we get a palindrome (16961344316961).

The spelling of 12510313015440 in words is "twelve trillion, five hundred ten billion, three hundred thirteen million, fifteen thousand, four hundred forty".