1240957512289 has 24 divisors (see below), whose sum is σ = 1365975950976. Its totient is φ = 1126533328800.

The previous prime is 1240957512271. The next prime is 1240957512299. The reversal of 1240957512289 is 9822157590421.

It is not a de Polignac number, because 1240957512289 - 2⁹ = 1240957511777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240957512259) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 392334022 + ... + 392337184.

It is an arithmetic number, because the mean of its divisors is an integer number (56915664624).

Almost surely, 2^{1240957512289} is an apocalyptic number.

It is an amenable number.

1240957512289 is a deficient number, since it is larger than the sum of its proper divisors (125018438687).

1240957512289 is a wasteful number, since it uses less digits than its factorization.

1240957512289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6789 (or 6778 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 55.

The spelling of 1240957512289 in words is "one trillion, two hundred forty billion, nine hundred fifty-seven million, five hundred twelve thousand, two hundred eighty-nine".