1240748065648 has 80 divisors (see below), whose sum is σ = 3038672109760. Its totient is φ = 477579276288.

The previous prime is 1240748065621. The next prime is 1240748065673. The reversal of 1240748065648 is 8465608470421.

It is a super-3 number, since 3×1240748065648³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11461833 + ... + 11569576.

It is an arithmetic number, because the mean of its divisors is an integer number (37983401372).

Almost surely, 2^{1240748065648} is an apocalyptic number.

It is an amenable number.

1240748065648 is an abundant number, since it is smaller than the sum of its proper divisors (1797924044112).

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

1240748065648 is a wasteful number, since it uses less digits than its factorization.

1240748065648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23031474 (or 23031468 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 55.

The spelling of 1240748065648 in words is "one trillion, two hundred forty billion, seven hundred forty-eight million, sixty-five thousand, six hundred forty-eight".