1240863515136 has 400 divisors, whose sum is σ = 4237458487680. Its totient is φ = 354137702400.

The previous prime is 1240863515113. The next prime is 1240863515141. The reversal of 1240863515136 is 6315153680421.

1240863515136 is a `hidden beast` number, since 1 + 2 + 4 + 0 + 8 + 635 + 1 + 5 + 1 + 3 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1240863515091 and 1240863515100.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 348653325 + ... + 348656883.

Almost surely, 2^{1240863515136} is an apocalyptic number.

1240863515136 is a gapful number since it is divisible by the number (16) 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 1240863515136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2118729243840).

1240863515136 is an abundant number, since it is smaller than the sum of its proper divisors (2996594972544).

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

1240863515136 is an equidigital number, since it uses as much as digits as its factorization.

1240863515136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4797 (or 4772 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 1240863515136 in words is "one trillion, two hundred forty billion, eight hundred sixty-three million, five hundred fifteen thousand, one hundred thirty-six".