1210515201440 has 48 divisors (see below), whose sum is σ = 2866667721120. Its totient is φ = 483050430720.

The previous prime is 1210515201431. The next prime is 1210515201443. The reversal of 1210515201440 is 441025150121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1210515201443) 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, 8961266 + ... + 9095345.

It is an arithmetic number, because the mean of its divisors is an integer number (59722244190).

Almost surely, 2^{1210515201440} is an apocalyptic number.

1210515201440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210515201440 is an abundant number, since it is smaller than the sum of its proper divisors (1656152519680).

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

1210515201440 is a wasteful number, since it uses less digits than its factorization.

1210515201440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18057045 (or 18057037 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

The spelling of 1210515201440 in words is "one trillion, two hundred ten billion, five hundred fifteen million, two hundred one thousand, four hundred forty".