1240858888640 has 672 divisors, whose sum is σ = 3720952558080. Its totient is φ = 385675665408.

The previous prime is 1240858888597. The next prime is 1240858888673. The reversal of 1240858888640 is 468888580421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2004618251 + ... + 2004618869.

Almost surely, 2^{1240858888640} is an apocalyptic number.

1240858888640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1240858888640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1860476279040).

1240858888640 is an abundant number, since it is smaller than the sum of its proper divisors (2480093669440).

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

1240858888640 is a wasteful number, since it uses less digits than its factorization.

1240858888640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 31457280, while the sum is 62.

The spelling of 1240858888640 in words is "one trillion, two hundred forty billion, eight hundred fifty-eight million, eight hundred eighty-eight thousand, six hundred forty".